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Time - nouns denoting time and temporal relations

  1. 11 November = the feast of Saint Martin
  2. 14 July = a legal holiday in France celebrating the storming of the Paris bastille in 1789
  3. 15 August 1945 = the date of Allied victory over Japan, World War II
  4. 15 minutes = a quarter of an hour
  5. 1530s = the decade from 1530 to 1539
  6. 1750s = the decade from 1750 to 1759
  7. 1760s = the decade from 1760 to 1769
  8. 1770s = the decade from 1770 to 1779
  9. 1780s = the decade from 1780 to 1789
  10. 1790s = the decade from 1790 to 1799
  11. 1820s = the decade from 1820 to 1829
  12. 1830s = the decade from 1830 to 1839
  13. 1840s = the decade from 1840 to 1849
  14. 1850s = the decade from 1850 to 1859
  15. 1860s = the decade from 1860 to 1869
  16. 1870s = the decade from 1870 to 1879
  17. 1880s = the decade from 1880 to 1889
  18. 1890s = the decade from 1890 to 1899
  19. 1900s = the decade from 1900 to 1909
  20. 1920s = the decade from 1920 to 1929
  21. 1930s = the decade from 1930 to 1939
  22. 1940s = the decade from 1940 to 1949
  23. 1950s = the decade from 1950 to 1959
  24. 1960s = the decade from 1960 to 1969
  25. 1970s = the decade from 1970 to 1979
  26. 1980s = the decade from 1980 to 1989
  27. 1990s = the decade from 1990 to 1999
  28. 24-hour interval = time for Earth to make a complete rotation on its axis
  29. 24/7 = uptime is 24 hours a day 7 days a week
  30. 30 minutes = a half of an hour
  31. 365 days = a year that is not a leap year
  32. 366 days = a calendar year with an extra day added in February
  33. 6 June 1944 = date of the Allied landing in France, World War II
  34. 60 minutes = a period of time equal to 1/24th of a day
  35. 8 May 1945 = the date of Allied victory in Europe, World War II
  36. 9-11 = the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
  37. 9/11 = the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
  38. Ab = the eleventh month of the civil year
  39. absence = the time interval during which something or somebody is away
  40. academic session = the time during which a school holds classes
  41. academic term = the time during which a school holds classes
  42. academic year = the period of time each year when the school is open and people are studying
  43. accelerando = a gradually increasing tempo of music
  44. acceleration = a rate of increase of velocity
  45. access time = the interval between the time data is requested by the system and the time the data is provided by the drive
  46. Adar = the sixth month of the civil year
  47. Adar Sheni = included seven times in every 19 years
  48. administration = the tenure of a president
  49. Admission Day = in some states of the United States: a legal holiday commemorating the day the state was admitted to the Union
  50. adolescence = the time period between the beginning of puberty and adulthood
  51. adulthood = the period of time in your life after your physical growth has stopped and you are fully developed
  52. Advent = the season including the four Sundays preceding Christmas
  53. Advent Sunday = the first of the four Sundays during Advent
  54. aeon = an immeasurably long period of time / the longest division of geological time
  55. afterlife = life after death
  56. afternoon = the part of the day between noon and evening
  57. age = a time of life (usually defined in years) at which some particular qualification or power arises / a late time of life / a prolonged period of time / an era of history having some distinctive feature
  58. age of consent = the minimum age for marrying without parental consent or the minimum age for consensual sexual relations; intercourse at an earlier age can result in a charge of assault or statutory rape
  59. Age of Fishes = from 405 million to 345 million years ago
  60. Age of Mammals = approximately the last 63 million years
  61. Age of Man = last 2 million years
  62. Age of Reptiles = from 230 million to 63 million years ago
  63. Aghan = the ninth month of the Hindu calendar
  64. air alert = the time period during which military and civilian agencies are prepared for an enemy air attack
  65. airspeed = the speed of an aircraft relative to the air in which it is flying
  66. Alaska Standard Time = standard time in the 9th time zone west of Greenwich, reckoned at the 135th meridian west
  67. All Fools' day = the first day of April which is celebrated by playing practical jokes
  68. All Saints' Day = a Christian feast day honoring all the saints
  69. All Souls' Day = a day of supplication for all the souls in purgatory
  70. allegretto = a quicker tempo than andante but not as fast as allegro
  71. allegro = a brisk and lively tempo
  72. allegro con spirito = lively with spirit
  73. Allhallows = a Christian feast day honoring all the saints
  74. Allhallows Eve = the evening before All Saints' Day
  75. Allhallowtide = the season of All Saints' Day
  76. alpha and omega = the first and last
  77. American Indian Day = US: the 4th Friday in September
  78. anachronism = something located at a time when it could not have existed or occurred
  79. anal phase = the second sexual and social stage of a child's development during which bowel control is learned
  80. anal stage = the second sexual and social stage of a child's development during which bowel control is learned
  81. andante = a moderately slow tempo
  82. anniversary = the date on which an event occurred in some previous year
  83. annum = year
  84. Annunciation = a festival commemorating the announcement of the Incarnation by the angel Gabriel to the Virgin Mary
  85. Annunciation Day = a festival commemorating the announcement of the Incarnation by the angel Gabriel to the Virgin Mary
  86. anomalistic month = period between successive perigees
  87. anomalistic year = time of the earth's revolution from perihelion to perihelion again
  88. antiquity = the historic period preceding the Middle Ages in Europe
  89. apogee = a final climactic stage
  90. Apr = the month following March and preceding May
  91. April = the month following March and preceding May
  92. April 14 = a day celebrating political and economic unity among American countries
  93. April Fools' = the first day of April which is celebrated by playing practical jokes
  94. April Fools' day = the first day of April which is celebrated by playing practical jokes
  95. Arbor Day = a day designated for planting trees
  96. Archaeozoic = the time from 3,800 million years to 2,500 million years ago; earth's crust formed
  97. Archaeozoic aeon = the time from 3,800 million years to 2,500 million years ago; earth's crust formed
  98. Archean = the time from 3,800 million years to 2,500 million years ago; earth's crust formed
  99. Archean aeon = the time from 3,800 million years to 2,500 million years ago; earth's crust formed
  100. Archean eon = the time from 3,800 million years to 2,500 million years ago; earth's crust formed
  101. Archeozoic = the time from 3,800 million years to 2,500 million years ago; earth's crust formed
  102. Archeozoic eon = the time from 3,800 million years to 2,500 million years ago; earth's crust formed
  103. Armed Forces Day = the 3rd Saturday in May
  104. Armistice Day = a legal holiday in the United States
  105. arrival time = the time at which a public conveyance is scheduled to arrive at a given destination
  106. Asadha = the fourth month of the Hindu calendar
  107. Asarh = the fourth month of the Hindu calendar
  108. Ascension = celebration of the Ascension of Christ into heaven
  109. Ascension Day = celebration of the Ascension of Christ into heaven
  110. Ascension of the Lord = celebration of the Ascension of Christ into heaven
  111. Ash Wednesday = the 7th Wednesday before Easter; the first day of Lent; the day following Mardi Gras
  112. Asin = the seventh month of the Hindu calendar
  113. Assumption = celebration in the Roman Catholic Church of the Virgin Mary's being taken up into heaven when her earthly life ended
  114. Assumption of Mary = celebration in the Roman Catholic Church of the Virgin Mary's being taken up into heaven when her earthly life ended
  115. astronomical year = the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
  116. Asvina = the seventh month of the Hindu calendar
  117. Atlantic Standard Time = standard time in the 4th time zone west of Greenwich, reckoned at the 60th meridian
  118. Atlantic Time = standard time in the 4th time zone west of Greenwich, reckoned at the 60th meridian
  119. attendance = the frequency with which a person is present
  120. attosecond = one quintillionth (10^-18) of a second
  121. attrition rate = the rate of shrinkage in size or number
  122. Aug = the month following July and preceding September
  123. August = the month following July and preceding September
  124. August 1 = commemorates Saint Peter's miraculous deliverance from prison; a quarter day in Scotland
  125. August 15 = celebration in the Roman Catholic Church of the Virgin Mary's being taken up into heaven when her earthly life ended
  126. August 6 = a church festival held in commemoration of the Transfiguration of Jesus
  127. auld langsyne = past times remembered with nostalgia
  128. aurora = the first light of day
  129. autumn = the season when the leaves fall from the trees
  130. autumnal equinox = September 22
  131. Av = the eleventh month of the civil year
  132. babyhood = the early stage of growth or development
  133. bachelorhood = the time of a man's life prior to marriage
  134. Baisakh = the second month of the Hindu calendar
  135. bank holiday = any of several weekdays when banks are closed
  136. Baroque = the historic period from about 1600 until 1750 when the baroque style of art, architecture, and music flourished in Europe
  137. Baroque era = the historic period from about 1600 until 1750 when the baroque style of art, architecture, and music flourished in Europe
  138. Baroque period = the historic period from about 1600 until 1750 when the baroque style of art, architecture, and music flourished in Europe
  139. baseball season = the season when baseball is played
  140. basketball season = the season when basketball is played
  141. Bastille Day = a legal holiday in France celebrating the storming of the Paris bastille in 1789
  142. beats per minute = the pace of music measured by the number of beats occurring in 60 seconds
  143. beauty sleep = sleep before midnight
  144. bedtime = the time you go to bed
  145. beginning = the time at which something is supposed to begin
  146. bell = each of the eight half-hour units of nautical time signaled by strokes of a ship's bell
  147. Bering Standard Time = standard time in the 11th time zone west of Greenwich, reckoned at the 165th meridian west
  148. Bering Time = standard time in the 11th time zone west of Greenwich, reckoned at the 165th meridian west
  149. Bhadon = the sixth month of the Hindu calendar
  150. Bhadrapada = the sixth month of the Hindu calendar
  151. bicentenary = the 200th anniversary
  152. bicentennial = the 200th anniversary
  153. bimester = a period of 2 months
  154. bimillenary = a span of 2000 years / the 2000th anniversary
  155. bimillennium = a span of 2000 years / the 2000th anniversary
  156. biological clock = an innate mechanism in living organisms that controls the periodicity of many physiological functions
  157. biological time = the time of various biological processes
  158. birth = the time when something begins
  159. birth rate = the ratio of live births in an area to the population of that area
  160. birthday = an anniversary of the day on which a person was born (or the celebration of it) / the date on which a person was born
  161. birthrate = the ratio of live births in an area to the population of that area
  162. bissextile day = the name of the day that is added during a leap year
  163. bissextile year = a calendar year with an extra day added in February
  164. bit = an indefinitely short time
  165. bits per second = the rate at which data is transferred
  166. blackout = a suspension of radio or tv broadcasting
  167. blink of an eye = a very short time
  168. bloom = the best time of youth / the period of greatest prosperity or productivity
  169. bloom of youth = the best time of youth
  170. blossom = the period of greatest prosperity or productivity
  171. blue moon = a long time
  172. Bonfire Night = effigies of Guy Fawkes are burned on this night
  173. bottom = the second half of an inning
  174. bottom of the inning = the second half of an inning
  175. bout = a period of illness / (sports) a division during which one team is on the offensive
  176. Boxing Day = first weekday after Christmas
  177. boyhood = the childhood of a boy
  178. bpm = the pace of music measured by the number of beats occurring in 60 seconds
  179. bps = the rate at which data is transferred
  180. break = a time interval during which there is a temporary cessation of something
  181. break of day = the first light of day
  182. break of the day = the first light of day
  183. breakfast time = the customary or habitual hour for eating breakfast
  184. breath = a short respite
  185. breather = a short respite
  186. breathing place = a short respite
  187. breathing space = a short respite
  188. breathing spell = a short respite
  189. breathing time = a short respite
  190. bronze age = the third age of the world, marked by war and violence / (archeology) a period between the Stone and Iron Ages, characterized by the manufacture and use of bronze tools and weapons
  191. Brumaire = second month of the Revolutionary calendar
  192. by-and-by = an indefinite time in the future
  193. bygone = past events to be put aside
  194. c = the speed at which light travels in a vacuum
  195. caesura = a pause or interruption
  196. Caitra = the first Hindu calendar month
  197. calendar = a system of timekeeping that defines the beginning and length and divisions of the year
  198. calendar day = a day reckoned from midnight to midnight
  199. calendar month = one of the twelve divisions of the calendar year
  200. calendar week = a period of seven consecutive days starting on Sunday
  201. calendar year = the year (reckoned from January 1 to December 31) according to Gregorian calendar
  202. Caliphate = the era of Islam's ascendancy from the death of Mohammed until the 13th century
  203. Cambrian = from 544 million to about 500 million years ago
  204. Cambrian period = from 544 million to about 500 million years ago
  205. Candlemas = feast day commemorating the presentation of Christ in the temple
  206. Candlemas Day = feast day commemorating the presentation of Christ in the temple
  207. canicular days = the hot period between early July and early September
  208. canicule = the hot period between early July and early September
  209. canonical hour = one of seven specified times for prayer
  210. Carboniferous = from 345 million to 280 million years ago
  211. Carboniferous period = from 345 million to 280 million years ago
  212. cardiac output = the amount of blood pumped out by the ventricles in a given period of time
  213. cease = end
  214. Cenozoic = approximately the last 63 million years
  215. Cenozoic era = approximately the last 63 million years
  216. centenary = the 100th anniversary
  217. centennial = the 100th anniversary
  218. Central Standard Time = standard time in the 6th time zone west of Greenwich, reckoned at the 90th meridian
  219. Central Time = standard time in the 6th time zone west of Greenwich, reckoned at the 90th meridian
  220. centripetal acceleration = the acceleration toward the center that holds a satellite in elliptical orbit
  221. century = a period of 100 years
  222. Chait = the first Hindu calendar month
  223. change of life = the time in a woman's life in which the menstrual cycle ends
  224. channel capacity = the maximum data rate that can be attained over a given channel
  225. Channukah = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  226. Channukkah = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  227. Chanukah = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  228. Chanukkah = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  229. chapter = any distinct period in history or in a person's life
  230. checkout = the latest time for vacating a hotel room
  231. checkout time = the latest time for vacating a hotel room
  232. childhood = the time of person's life when they are a child
  233. Chislev = the third month of the civil year
  234. Christian era = the time period beginning with the supposed year of Christ's birth
  235. Christian holy day = a religious holiday for Christians
  236. Christian year = the year in the ecclesiastical calendar
  237. Christmas = a Christian holiday celebrating the birth of Christ
  238. Christmas Day = a Christian holiday celebrating the birth of Christ
  239. Christmas Eve = the day before Christmas
  240. Christmastide = period extending from Dec. 24 to Jan. 6
  241. Christmastime = period extending from Dec. 24 to Jan. 6
  242. chukka = one of six divisions into which a polo match is divided
  243. chukker = one of six divisions into which a polo match is divided
  244. church calendar = a calendar of the Christian year indicating the dates of fasts and festivals
  245. church festival = a festival having religious significance
  246. church year = the year in the ecclesiastical calendar
  247. Cinco de Mayo = the fifth of May which is observed in Mexico and Mexican-American communities in the United States to commemorate the Mexican victory over the French in the Battle of Puebla in 1862
  248. circadian rhythm = a daily cycle of activity observed in many living organisms
  249. Circumcision = feast day celebrating the circumcision of Jesus
  250. Citizenship Day = celebrated in the United States
  251. civil day = a day reckoned from midnight to midnight
  252. civil time = the official time in a local region
  253. civil year = the year (reckoned from January 1 to December 31) according to Gregorian calendar
  254. climacteric = the time in a woman's life in which the menstrual cycle ends / a period in a man's life corresponding to menopause
  255. clock time = a reading of a point in time as given by a clock
  256. clocking = the time taken to traverse a measured course
  257. close = the temporal end
  258. closing time = the regular time of day when an establishment closes to the public
  259. clotting time = the time it takes for a sample of blood to clot
  260. cockcrow = the first light of day
  261. cold snap = a spell of cold weather
  262. cold spell = a spell of cold weather
  263. Columbus Day = a legal holiday commemorating the discovery of America by Christopher Columbus
  264. command overhead = the processing time required by a device prior to the execution of a command
  265. command processing overhead = the processing time required by a device prior to the execution of a command
  266. command processing overhead time = the processing time required by a device prior to the execution of a command
  267. commencement = the time at which something is supposed to begin
  268. commencement day = the day on which university degrees are conferred
  269. Common era = the time period beginning with the supposed year of Christ's birth
  270. common measure = a time signature indicating four beats to the bar
  271. common time = a time signature indicating four beats to the bar
  272. common year = a year that is not a leap year
  273. Commonwealth Day = British, anniversary of Queen Victoria's birth
  274. compassionate leave = leave granted in an emergency such as family sickness or death
  275. compensatory time = time off that is granted to a worker as compensation for working overtime
  276. complin = last of the seven canonical hours just before retiring
  277. compline = last of the seven canonical hours just before retiring
  278. conclusion = the temporal end
  279. contemporary world = the circumstances and ideas of the present age
  280. continuance = the property of enduring or continuing in time / the period of time during which something continues
  281. continuum = a continuous nonspatial whole or extent or succession in which no part or portion is distinct or distinguishable from adjacent parts
  282. coordinated universal time = Greenwich Mean Time updated with leap seconds
  283. Corpus Christi = Thursday after Trinity Sunday
  284. cosmic time = the time covered by the physical formation and development of the universe
  285. count per minute = frequency per minute
  286. counts/minute = frequency per minute
  287. cps = the unit of frequency
  288. crack of doom = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  289. cradle = birth of a person
  290. crepuscle = the time of day immediately following sunset
  291. crepuscule = the time of day immediately following sunset
  292. Cretaceous = from 135 million to 63 million years ago; end of the age of reptiles
  293. Cretaceous period = from 135 million to 63 million years ago; end of the age of reptiles
  294. crime rate = the ratio of crimes in an area to the population of that area
  295. CST = standard time in the 6th time zone west of Greenwich, reckoned at the 90th meridian
  296. culmination = a final climactic stage
  297. curfew = the time that the curfew signal is sounded
  298. cycle = the unit of frequency
  299. cycle per second = the unit of frequency
  300. cycles/second = the unit of frequency
  301. D-day = date of the Allied landing in France, World War II
  302. dark = the time after sunset and before sunrise while it is dark outside
  303. Dark Ages = the period of history between classical antiquity and the Italian Renaissance
  304. data rate = the rate at which circuits or other devices operate when handling digital information
  305. date = the present / the specified day of the month / a particular day specified as the time something happens / the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred
  306. date of reference = an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
  307. Davis' Birthday = celebrated in southern United States
  308. dawn = the first light of day / an opening time period
  309. dawning = the first light of day
  310. day = some point or period in time / the recurring hours when you are not sleeping (especially those when you are working) / time for Earth to make a complete rotation on its axis / a day assigned to a particular purpose or observance / the time after sunrise and before sunset while it is light outside / the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day / the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis / an era of existence or influence
  311. Day of Atonement = a solemn and major fast day on the Jewish calendar; 10th of Tishri
  312. Day of Judgement = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  313. Day of Judgment = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  314. day of reckoning = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  315. day of remembrance = the date on which an event occurred in some previous year
  316. day of rest = a day set aside for rest
  317. day of the month = the specified day of the month
  318. day of the week = any one of the seven days in a week
  319. day off = a day when you are not required to work
  320. day shift = the work shift during the day
  321. daybreak = the first light of day
  322. daylight = the time after sunrise and before sunset while it is light outside
  323. daylight saving = time during which clocks are set one hour ahead of local standard time
  324. daylight savings = time during which clocks are set one hour ahead of local standard time
  325. daylight-saving time = time during which clocks are set one hour ahead of local standard time
  326. daylight-savings time = time during which clocks are set one hour ahead of local standard time
  327. days = the time during which someone's life continues
  328. dayspring = the first light of day
  329. daytime = the time after sunrise and before sunset while it is light outside
  330. dead = a time when coldness (or some other quality associated with death) is intense
  331. dead air = an inadvertent interruption in a broadcast during which there is no sound
  332. deadline = the point in time at which something must be completed
  333. death = the time at which life ends
  334. death rate = the ratio of deaths in an area to the population of that area
  335. deathbed = the last few hours before death
  336. deathrate = the ratio of deaths in an area to the population of that area
  337. Dec = the last (12th) month of the year
  338. Dec 24 = the day before Christmas
  339. Dec 25 = a Christian holiday celebrating the birth of Christ
  340. decade = a period of 10 years
  341. deceleration = a rate of decrease in velocity
  342. December = the last (12th) month of the year
  343. December 31 = the last day of the year
  344. December 8 = Roman Catholic holy day first celebrated in 1854
  345. decennary = a period of 10 years
  346. decennium = a period of 10 years
  347. Decoration Day = legal holiday in the United States, last Monday in May
  348. deep = the central and most intense or profound part
  349. degree day = the day on which university degrees are conferred
  350. delay = time during which some action is awaited
  351. demise = the time when something ends
  352. departure time = the time at which a public conveyance is scheduled to depart from a given point of origin
  353. Depression = a period during the 1930s when there was a worldwide economic depression and mass unemployment
  354. Devonian = from 405 million to 345 million years ago
  355. Devonian period = from 405 million to 345 million years ago
  356. Dhu al-Hijja = the twelfth month of the Islamic calendar and the season of the hajj
  357. Dhu al-Hijjah = the twelfth month of the Islamic calendar and the season of the hajj
  358. Dhu al-Qadah = the eleventh month of the Islamic calendar
  359. Dhu'l-Hijja = the twelfth month of the Islamic calendar and the season of the hajj
  360. Dhu'l-Hijjah = the twelfth month of the Islamic calendar and the season of the hajj
  361. Dhu'l-Qa'dah = the eleventh month of the Islamic calendar
  362. diamond jubilee = an anniversary celebrating the passage of 60 years
  363. diamond wedding = the 60th wedding anniversary
  364. diamond wedding anniversary = the 60th wedding anniversary
  365. dinnertime = the customary or habitual hour for the evening meal
  366. Discovery Day = a legal holiday commemorating the discovery of America by Christopher Columbus
  367. distance = the interval between two times / a remote point in time
  368. dog days = the hot period between early July and early September
  369. dogwatch = either of two short watches: from 4-6 pm or 6-8 pm
  370. Dominicus = first day of the week
  371. Dominion Day = a legal holiday in Canada commemorating receiving Dominion status in 1867
  372. Doomsday = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  373. Dormition = celebration in the Eastern Orthodox Church of the Virgin Mary's being taken up into heaven when her earthly life ended
  374. dose rate = the quantity of radiation absorbed per unit time
  375. dotage = mental infirmity as a consequence of old age
  376. double time = a fast marching pace (180 steps/min) or slow jog
  377. downtime = a period of time when something (as a machine or factory) is not operating
  378. drinking age = the age at which is legal for a person to buy alcoholic beverages
  379. drought = a prolonged shortage
  380. drouth = a prolonged shortage
  381. dry season = one of the two seasons in tropical climates
  382. due date = the date on which an obligation must be repaid
  383. duple time = musical time with two beats in each bar
  384. duration = the property of enduring or continuing in time / the period of time during which something continues
  385. dusk = the time of day immediately following sunset
  386. duty period = the time period during which you are at work
  387. duty tour = a period of time spent in military service
  388. dying = the time when something ends
  389. early childhood = the early stage of growth or development
  390. early days = an early period of development
  391. early-morning hour = an hour early in the morning
  392. Earth-received time = the coordinated universal time when an event is received on Earth
  393. Easter = a Christian celebration of the Resurrection of Christ
  394. Easter Day = the day (in March or April) on which the festival of Easter is celebrated
  395. Easter Sunday = the day (in March or April) on which the festival of Easter is celebrated
  396. Eastern Standard Time = standard time in the 5th time zone west of Greenwich, reckoned at the 75th meridian
  397. Eastern Time = standard time in the 5th time zone west of Greenwich, reckoned at the 75th meridian
  398. Eastertide = the Easter season
  399. ecclesiastical calendar = a calendar of the Christian year indicating the dates of fasts and festivals
  400. efflorescence = the period of greatest prosperity or productivity
  401. eighties = the time of life between 80 and 90 / the decade from 1980 to 1989 / the decade from 1880 to 1889
  402. elapsed time = the time that elapses while some event is occurring
  403. eld = a time of life (usually defined in years) at which some particular qualification or power arises / a late time of life
  404. election day = the day appointed for an election
  405. eleventh hour = the latest possible moment
  406. Elizabethan age = a period in British history during the reign of Elizabeth I in the 16th century
  407. Ellul = the twelfth month of the civil year
  408. Elul = the twelfth month of the civil year
  409. Ember Day = a day set aside for fasting and prayer
  410. embolism = an insertion into a calendar
  411. Empire day = British, anniversary of Queen Victoria's birth
  412. end = the point in time at which something ends
  413. end of the world = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  414. ending = the point in time at which something ends
  415. enlistment = a period of time spent in military service
  416. entr'acte = the interlude between two acts of a play
  417. Eocene = from 58 million to 40 million years ago
  418. Eocene epoch = from 58 million to 40 million years ago
  419. Eolithic = the earliest part of the Stone Age marked by the earliest signs of human culture
  420. Eolithic Age = the earliest part of the Stone Age marked by the earliest signs of human culture
  421. eon = an immeasurably long period of time / the longest division of geological time
  422. ephemera = something transitory
  423. ephemeris time = a measure of time defined by Earth's orbital motion
  424. Epipaleolithic = middle part of the Stone Age beginning about 15,000 years ago
  425. Epiphany = twelve days after Christmas
  426. Epiphany of Our Lord = twelve days after Christmas
  427. episcopate = the term of office of a bishop
  428. epoch = a unit of geological time that is a subdivision of a period and is itself divided into ages / a period marked by distinctive character or reckoned from a fixed point or event / (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
  429. equinoctial year = the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
  430. equinox = either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length
  431. era = a major division of geological time
  432. ERT = the coordinated universal time when an event is received on Earth
  433. erythrocyte sedimentation rate = the rate at which red blood cells settle out in a tube of blood under standardized conditions
  434. escape velocity = the minimum velocity needed to escape a gravitational field
  435. eschaton = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  436. ESR = the rate at which red blood cells settle out in a tube of blood under standardized conditions
  437. EST = standard time in the 5th time zone west of Greenwich, reckoned at the 75th meridian
  438. eternity = time without end / a seemingly endless time interval
  439. eve = the day before / the latter part of the day (the period of decreasing daylight from late afternoon until nightfall) / the period immediately before something
  440. even = the latter part of the day
  441. evenfall = the time of day immediately following sunset
  442. evening = the latter part of the day (the period of decreasing daylight from late afternoon until nightfall) / the early part of night (from dinner until bedtime) spent in a special way / a later concluding time period
  443. evening shift = the work shift during the evening
  444. evensong = the sixth of the seven canonical hours of the divine office; early evening
  445. eventide = the latter part of the day
  446. exhibition season = the time before the regular games begin when football or baseball teams play practice games
  447. expiration = a coming to an end of a contract period
  448. expiry = a coming to an end of a contract period
  449. extended time scale = the time scale used in data processing when the time-scale factor is greater than one
  450. extension = a mutually agreed delay in the date set for the completion of a job or payment of a debt
  451. extra innings = overtime play until one team is ahead at the end of an inning
  452. extra time = playing time beyond regulation, to break a tie
  453. face time = work time spent at the location of or in the presence of other people
  454. fag end = the time of the last part of something
  455. fall = the time of day immediately following sunset / the season when the leaves fall from the trees
  456. fall equinox = September 22
  457. fast day = a day designated for fasting
  458. Fast of Ab = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  459. Fast of Av = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  460. Fast of Esther = a minor fast day on Adar 13 commemorates three days that Esther fasted before approaching the Persian king on behalf of the Jewish people
  461. Fast of Gedaliah = a minor fast day on Tishri 3 that commemorates the killing of the Jewish governor of Judah
  462. Fast of Tammuz = a minor fast day on Tammuz 17 when the walls of Jerusalem were breached
  463. Fast of Tevet = a minor fast day on Tevet 10 commemorates the beginning of the siege of Jerusalem and has also been proclaimed a memorial day for the six million Jews who died in the Holocaust
  464. Fast of the Firstborn = a minor fast day on Nissan 14 that is observed only by firstborn males
  465. fast time scale = the time scale used in data processing when the time-scale factor is less than one
  466. Fat Tuesday = the last day before Lent
  467. fatality rate = the ratio of deaths in an area to the population of that area
  468. Father's Day = US: third Sunday in June
  469. feast day = a day designated for feasting
  470. Feast of Booths = a major Jewish festival beginning on the eve of the 15th of Tishri and commemorating the shelter of the Israelites during their 40 years in the wilderness
  471. Feast of Dedication = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  472. Feast of Dormition = celebration in the Eastern Orthodox Church of the Virgin Mary's being taken up into heaven when her earthly life ended
  473. Feast of Lights = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  474. Feast of Sacrifice = the 10th day of Dhu'l-Hijja
  475. Feast of Tabernacles = a major Jewish festival beginning on the eve of the 15th of Tishri and commemorating the shelter of the Israelites during their 40 years in the wilderness
  476. Feast of the Circumcision = feast day celebrating the circumcision of Jesus
  477. Feast of the Dedication = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  478. Feast of the Unleavened Bread = a Jewish festival (traditionally 8 days from Nissan 15) celebrating the exodus of the Israelites from Egypt
  479. Feast of Weeks = Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments
  480. Feb = the month following January and preceding March
  481. Feb 2 = feast day commemorating the presentation of Christ in the temple
  482. February = the month following January and preceding March
  483. February 12 = the day on which President Abraham Lincoln is remembered
  484. February 14 = a day for the exchange of tokens of affection
  485. February 2 = if the ground hog emerges and sees his shadow on this day, there will be 6 more weeks of winter
  486. February 22 = the day on which George Washington is remembered
  487. February 29 = the name of the day that is added during a leap year
  488. femoral pulse = pulse of the femoral artery
  489. femtosecond = one quadrillionth (10^-15) of a second
  490. feria = a weekday on which no festival or holiday is celebrated
  491. fertile period = the time in the menstrual cycle when fertilization is most likely to be possible
  492. fertile phase = the time in the menstrual cycle when fertilization is most likely to be possible
  493. fertility = the ratio of live births in an area to the population of that area
  494. fertility rate = the ratio of live births in an area to the population of that area
  495. festival = a day or period of time set aside for feasting and celebration
  496. Festival of Lights = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  497. fete day = a day designated for feasting
  498. field day = a day devoted to an outdoor social gathering / a time of unusual pleasure and success / a day for outdoor athletic competition / (military) a day for military exercises and display
  499. fifties = the time of life between 50 and 60 / the decade from 1950 to 1959
  500. fin de siecle = the end of a century, especially the 19th century
  501. final period = the final division into which the play of a game is divided
  502. finale = the temporal end
  503. financial year = any accounting period of 12 months
  504. finis = the temporal end
  505. finish = the temporal end
  506. first = the time at which something is supposed to begin
  507. first half = the first of two halves of play
  508. first light = the first light of day
  509. First of May = observed in many countries to celebrate the coming of spring
  510. first period = the first division into which the play of a game is divided
  511. first quarter = the first fourth of the Moon's period of revolution around the Earth
  512. first trimester = time period extending from the first day of the last menstrual period through 12 weeks of gestation
  513. fiscal year = any accounting period of 12 months
  514. fishing season = the season during which it is legal to catch fish
  515. Flag Day = commemorating the adoption of the United States flag in 1777
  516. flash = a very short time
  517. float = the time interval between the deposit of a check in a bank and its payment
  518. Floreal = eighth month of the Revolutionary calendar
  519. flow = the amount of fluid that flows in a given time
  520. flow rate = the amount of fluid that flows in a given time
  521. flower = the period of greatest prosperity or productivity
  522. flush = the period of greatest prosperity or productivity
  523. flux = the rate of flow of energy or particles across a given surface
  524. football season = the season when football is played
  525. forenoon = the time period between dawn and noon
  526. forties = the time of life between 40 and 50 / the decade from 1940 to 1949
  527. fortnight = a period of fourteen consecutive days
  528. four-four time = a time signature indicating four beats to the bar
  529. fourth dimension = the fourth coordinate that is required (along with three spatial dimensions) to specify a physical event
  530. Fourth of July = a legal holiday in the United States
  531. frame = one of nine divisions of play during which each team has a turn at bat
  532. free time = time available for hobbies and other activities that you enjoy
  533. frequence = the number of occurrences within a given time period
  534. frequency = the number of occurrences within a given time period
  535. Fri = the sixth day of the week
  536. Friday = the sixth day of the week
  537. Frimaire = third month of the Revolutionary calendar
  538. Fructidor = twelfth month of the Revolutionary calendar
  539. full = the time when the Moon is fully illuminated
  540. full moon = the time when the Moon is fully illuminated
  541. full phase of the moon = the time when the Moon is fully illuminated
  542. full term = the end of gestation or point at which birth is imminent
  543. full-of-the-moon = the time when the Moon is fully illuminated
  544. furlough = a temporary leave of absence from military duty
  545. future = the time yet to come
  546. future date = a particular day in the future that is specified as the time something will happen
  547. futurity = the time yet to come
  548. gait = the rate of moving
  549. game = a division of play during which one player serves
  550. Gc = 1,000,000,000 periods per second
  551. geezerhood = a late time of life
  552. generation = the normal time between successive generations / a stage of technological development or innovation
  553. genital phase = the fifth sexual and social stage in a person's development occurring during adolescence
  554. genital stage = the fifth sexual and social stage in a person's development occurring during adolescence
  555. geologic time = the time of the physical formation and development of the earth
  556. geological era = a major division of geological time
  557. geological period = a unit of geological time during which a system of rocks formed
  558. geological time = the time of the physical formation and development of the earth
  559. Germinal = seventh month of the Revolutionary calendar
  560. gestation = the period during which an embryo develops
  561. gestation period = the period during which an embryo develops
  562. get-go = the time at which something is supposed to begin
  563. GHz = 1,000,000,000 periods per second
  564. gigacycle = 1,000,000,000 periods per second
  565. gigacycle per second = 1,000,000,000 periods per second
  566. gigahertz = 1,000,000,000 periods per second
  567. girlhood = the childhood of a girl
  568. Glacial epoch = from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere
  569. glacial period = any period of time during which glaciers covered a large part of the earth's surface
  570. gloam = the time of day immediately following sunset
  571. gloaming = the time of day immediately following sunset
  572. GMT = the local time at the 0 meridian passing through Greenwich, England
  573. go = a time period for working
  574. Golden Age = the first and best age of the world, a time of ideal happiness, prosperity, and innocence
  575. golden wedding anniversary = the 50th wedding anniversary
  576. golden years = the time of life after retirement from active work
  577. Good Friday = Friday before Easter
  578. good old days = past times remembered with nostalgia
  579. grace = a period of time past the deadline for fulfilling an obligation during which a penalty that would be imposed for being late is waived, especially an extended period granted as a special favor
  580. grace period = a period of time past the deadline for fulfilling an obligation during which a penalty that would be imposed for being late is waived, especially an extended period granted as a special favor
  581. grave = death of a person
  582. graveyard shift = the work shift during the night
  583. graveyard watch = a watch during the night
  584. Great Depression = a period during the 1930s when there was a worldwide economic depression and mass unemployment
  585. Great Schism = the period from 1378 to 1417 during which there were two papacies in the Roman Catholic Church, one in Rome and one in Avignon
  586. great year = time required for one complete cycle of the precession of the equinoxes, about 25,800 years
  587. Greenwich Mean Time = the local time at the 0 meridian passing through Greenwich, England
  588. Greenwich Time = the local time at the 0 meridian passing through Greenwich, England
  589. Gregorian calendar = the solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years
  590. Gregorian calendar month = a month in the Gregorian calendar
  591. Groundhog Day = if the ground hog emerges and sees his shadow on this day, there will be 6 more weeks of winter
  592. groundspeed = the speed of an aircraft relative to the ground
  593. growing season = the season during which a crop grows best
  594. growth rate = the rate of increase in size per unit time
  595. guest night = an evening when members of a club or college can bring their friends as guests
  596. Guy Fawkes Day = day for the celebration of the discovery of the Gunpowder Plot
  597. Guy Fawkes Night = effigies of Guy Fawkes are burned on this night
  598. Hadean = the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks
  599. Hadean aeon = the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks
  600. Hadean eon = the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks
  601. Hadean time = the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks
  602. half = one of two divisions into which some games or performances are divided: the two divisions are separated by an interval
  603. half life = the time required for something to fall to half its initial value
  604. half-century = a period of 50 years
  605. half-holiday = a day on which half is free from work or duty
  606. half-hour = a half of an hour
  607. half-life = the time required for something to fall to half its initial value
  608. half-moon = the time at which the Moon is at first or last quarter when half its face is illuminated
  609. half-term = a short vacation about halfway through a school term
  610. halftime = an intermission between the first and second half of a game
  611. Hallowe'en = the evening before All Saints' Day
  612. Halloween = the evening before All Saints' Day
  613. Hallowmas = a Christian feast day honoring all the saints
  614. Hallowmass = a Christian feast day honoring all the saints
  615. Hannukah = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  616. Hanukah = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  617. Hanukkah = an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
  618. happy hour = the time of day when a bar sells alcoholic drinks at a reduced price
  619. hard time = a term served in a maximum security prison
  620. hard times = a time of difficulty
  621. Harlem Renaissance = a period in the 1920s when African-American achievements in art and music and literature flourished
  622. harvest moon = the full moon nearest the September equinox
  623. Hawaii Standard Time = standard time in the 10th time zone west of Greenwich, reckoned at the 150th meridian west
  624. Hawaii Time = standard time in the 10th time zone west of Greenwich, reckoned at the 150th meridian west
  625. heart rate = the rate at which the heart beats
  626. heartbeat = a very short time
  627. hebdomad = any period of seven consecutive days
  628. Hebrew calendar = the calendar used by the Jews; dates from 3761 BC
  629. here and now = at this time
  630. hereafter = the time yet to come / life after death
  631. hertz = the unit of frequency
  632. Heshvan = the second month of the civil year
  633. heyday = the period of greatest prosperity or productivity
  634. High Holiday = Jewish holy days observed with particular solemnity
  635. High Holy Day = Jewish holy days observed with particular solemnity
  636. high noon = the middle of the day
  637. high season = the season when travel is most active and rates are highest
  638. high time = the latest possible moment
  639. Hindu calendar = the lunisolar calendar governing the religious life of Hindus
  640. Hindu calendar month = any lunisolar month in the Hindu calendar
  641. historic period = an era of history having some distinctive feature
  642. history = the aggregate of past events / the continuum of events occurring in succession leading from the past to the present and even into the future
  643. hitch = a period of time spent in military service
  644. hockey season = the season when hockey is played
  645. Hogmanay = New Year's Eve in Scotland
  646. hold = time during which some action is awaited
  647. holiday = leisure time away from work devoted to rest or pleasure / a day on which work is suspended by law or custom
  648. holiday season = a time when many people take holidays
  649. Holocene = approximately the last 10,000 years
  650. Holocene epoch = approximately the last 10,000 years
  651. holy day = a day specified for religious observance
  652. holy day of obligation = a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion
  653. Holy Innocents' Day = December 28, commemorating Herod's slaughter of the children of Bethlehem
  654. Holy Saturday = the Saturday before Easter
  655. Holy Thursday = the Thursday before Easter
  656. Holy Week = the week before Easter
  657. Holy Year = a period of remission from sin
  658. honeymoon = a holiday taken by a newly married couple / the early (usually calm and harmonious) period of a relationship
  659. hospitalization = a period of time when you are confined to a hospital
  660. hot spell = a spell of hot weather
  661. hour = a period of time equal to 1/24th of a day / clock time / a special and memorable period
  662. hours = an indefinite period of time / a period of time assigned for work
  663. hr = a period of time equal to 1/24th of a day
  664. hunting season = the season during which it is legal to kill a particular species
  665. hypervelocity = excessive velocity
  666. Hz = the unit of frequency
  667. ice age = any period of time during which glaciers covered a large part of the earth's surface
  668. Id al-Adha = the 10th day of Dhu'l-Hijja
  669. Id al-Fitr = a Muslim day of feasting at the end of Ramadan
  670. ides = in the Roman calendar: the 15th of March or May or July or October or the 13th of any other month
  671. Immaculate Conception = Roman Catholic holy day first celebrated in 1854
  672. immortality = perpetual life after death
  673. in time = in the correct rhythm
  674. Inauguration Day = the day designated for inauguration of the United States President
  675. incarnation = time passed in a particular bodily form
  676. incipience = beginning to exist or to be apparent
  677. incipiency = beginning to exist or to be apparent
  678. incubation = the phase in the development of an infection between the time a pathogen enters the body and the time the first symptoms appear
  679. incubation period = the period between infection and the appearance of symptoms of the disease
  680. incumbency = the term during which some position is held
  681. Independence Day = a legal holiday in the United States
  682. Indian summer = a period of unusually warm weather in the autumn
  683. indiction = a 15-year cycle used as a chronological unit in ancient Rome and adopted in some medieval kingdoms
  684. Industrial Revolution = the transformation from an agricultural to an industrial nation
  685. infancy = the early stage of growth or development
  686. infant deathrate = the death rate during the first year of life
  687. infant mortality = the death rate during the first year of life
  688. infant mortality rate = the death rate during the first year of life
  689. infinity = time without end
  690. inflation rate = the rate of change of prices (as indicated by a price index) calculated on a monthly or annual basis
  691. information age = a period beginning in the last quarter of the 20th century when information became easily accessible through publications and through the manipulation of information by computers and computer networks
  692. inning = one of nine divisions of play during which each team has a turn at bat
  693. Innocents' Day = December 28, commemorating Herod's slaughter of the children of Bethlehem
  694. instant = a particular point in time / a very short time
  695. intercalary year = a calendar year with an extra day added in February
  696. intercalation = an insertion into a calendar
  697. interim = the time between one event, process, or period and another
  698. interlude = an intervening period or episode
  699. intermission = a time interval during which there is a temporary cessation of something
  700. interregnum = the time between two reigns, governments, etc.
  701. interruption = a time interval during which there is a temporary cessation of something
  702. interval = a definite length of time marked off by two instants
  703. iron age = the last and worst age of the world / (archeology) the period following the Bronze Age
  704. Islamic calendar = the lunar calendar used by Muslims; dates from 622 AD
  705. Islamic calendar month = any lunar month in the Muslim calendar
  706. isometry = the growth rates in different parts of a growing organism are the same
  707. Italian Renaissance = the early period when Italy was the center of the Renaissance
  708. Iyar = the eighth month of the civil year
  709. Iyyar = the eighth month of the civil year
  710. Jan = the first month of the year
  711. January = the first month of the year
  712. January 1 = the first day of the year / (Roman Catholic Church) a holy day of obligation / (Roman Catholic Church and Anglican Church) feast day celebrating the circumcision of Jesus
  713. January 19 = celebrated in southern United States
  714. January 20 = the day designated for inauguration of the United States President / a Christian holy day
  715. January 6 = twelve days after Christmas
  716. Jazz Age = the 1920s in the United States characterized in the novels of F. Scott Fitzgerald as a period of wealth, youthful exuberance, and carefree hedonism
  717. Jefferson Davis' Birthday = celebrated in southern United States
  718. jerk = the rate of change of acceleration
  719. Jeth = the third month of the Hindu calendar
  720. Jewish calendar = the calendar used by the Jews; dates from 3761 BC
  721. Jewish calendar month = a month in the Jewish calendar
  722. Jewish holy day = a religious holiday for Jews
  723. Jewish New Year = a solemn Jewish feast day celebrated on the 1st or 1st and 2nd of Tishri
  724. jiffy = a very short time
  725. Jomada I = the fifth month of the Islamic calendar
  726. Jomada II = the sixth month of the Islamic calendar
  727. jubilee = a special anniversary
  728. Judgement Day = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  729. Judgment Day = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  730. Julian calendar = the solar calendar introduced in Rome in 46 b.c. by Julius Caesar and slightly modified by Augustus, establishing the 12-month year of 365 days with each 4th year having 366 days and the months having 31 or 30 days except for February
  731. July = the month following June and preceding August
  732. July 1 = a legal holiday in Canada commemorating receiving Dominion status in 1867
  733. July 4 = a legal holiday in the United States
  734. Jumada I = the fifth month of the Islamic calendar
  735. Jumada II = the sixth month of the Islamic calendar
  736. June = the month following May and preceding July
  737. June 14 = commemorating the adoption of the United States flag in 1777
  738. June 21 = June 21, when the sun is at its northernmost point
  739. June 23 = the night before Midsummer Day
  740. June 24 = a quarter day in England, Wales, and Ireland
  741. June 29 = first celebrated in the 3rd century
  742. June 3 = celebrated in southern United States
  743. Jurassic = from 190 million to 135 million years ago; dinosaurs
  744. Jurassic period = from 190 million to 135 million years ago; dinosaurs
  745. Jyaistha = the third month of the Hindu calendar
  746. Kartik = the eighth month of the Hindu calendar
  747. Karttika = the eighth month of the Hindu calendar
  748. kc = one thousand periods per second
  749. kHz = one thousand periods per second
  750. kickoff = the time at which something is supposed to begin
  751. kilocycle = one thousand periods per second
  752. kilocycle per second = one thousand periods per second
  753. kilohertz = one thousand periods per second
  754. kilometers per hour = the ratio of the distance traveled (in kilometers) to the time spent traveling
  755. kilometres per hour = the ratio of the distance traveled (in kilometers) to the time spent traveling
  756. kingdom come = the end of time / the next world
  757. kip = sleep
  758. Kislev = the third month of the civil year
  759. km/h = the ratio of the distance traveled (in kilometers) to the time spent traveling
  760. knot = a unit of speed equal to one nautical mile per hour or about 1.15 statute miles per hour
  761. kph = the ratio of the distance traveled (in kilometers) to the time spent traveling
  762. Labor Day = first Monday in September in the United States and Canada
  763. lactation = the period following birth during which milk is secreted
  764. Lady Day = a festival commemorating the announcement of the Incarnation by the angel Gabriel to the Virgin Mary
  765. lag = the time between one event, process, or period and another
  766. Lag b'Omer = Jewish holy day; the 33rd day after the 2nd day of Passover
  767. Lammas = commemorates Saint Peter's miraculous deliverance from prison; a quarter day in Scotland
  768. Lammas Day = commemorates Saint Peter's miraculous deliverance from prison; a quarter day in Scotland
  769. Lammastide = the season of Lammas
  770. langsyne = past times remembered with nostalgia
  771. lapse = a break or intermission in the occurrence of something
  772. last = the time at which life ends; continuing until dead / the temporal end
  773. Last Day = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  774. last gasp = the point of death or exhaustion or completion
  775. last half = the second of two halves of play
  776. Last Judgement = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  777. Last Judgment = day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
  778. last minute = the latest possible moment
  779. last quarter = the last fourth of the Moon's period of revolution around the Earth
  780. late-night hour = the latter part of night
  781. latency = the time that elapses between a stimulus and the response to it / (computer science) the time it takes for a specific block of data on a data track to rotate around to the read/write head
  782. latency period = the fourth period (from about age 5 or 6 until puberty) during which sexual interests are supposed to be sublimated into other activities
  783. latency phase = the fourth period (from about age 5 or 6 until puberty) during which sexual interests are supposed to be sublimated into other activities
  784. latency stage = the fourth period (from about age 5 or 6 until puberty) during which sexual interests are supposed to be sublimated into other activities
  785. latent period = the time that elapses before the presence of a disease is manifested by symptoms / the time that elapses between a stimulus and the response to it
  786. lead time = the time interval between the initiation and the completion of a production process
  787. leap day = the name of the day that is added during a leap year
  788. leap second = a second (as measured by an atomic clock) added to or subtracted from Greenwich Mean Time in order to compensate for slowing in the Earth's rotation
  789. leap year = a calendar year with an extra day added in February
  790. lease = the period of time during which a contract conveying property to a person is in effect
  791. leave = the period of time during which you are absent from work or duty
  792. leave of absence = the period of time during which you are absent from work or duty
  793. Lee's Birthday = celebrated in southern United States
  794. legal age = the age at which persons are considered competent to manage their own affairs
  795. legal holiday = authorized by law and limiting work or official business
  796. leisure = time available for ease and relaxation
  797. leisure time = time available for ease and relaxation
  798. Lent = a period of 40 weekdays from Ash Wednesday to Holy Saturday
  799. Lententide = a period of 40 weekdays from Ash Wednesday to Holy Saturday
  800. letup = a pause during which things are calm or activities are diminished
  801. liberty = leave granted to a sailor or naval officer
  802. life = the period during which something is functional (as between birth and death) / the period between birth and the present time / the period from the present until death / a prison term lasting as long as the prisoner lives
  803. life expectancy = an expected time to live as calculated on the basis of statistical probabilities
  804. life sentence = a prison term lasting as long as the prisoner lives
  805. life-time = the period during which something is functional
  806. lifespan = the period during which something is functional
  807. lifetime = the period during which something is functional
  808. light speed = the speed at which light travels in a vacuum
  809. lights-out = a prescribed bedtime
  810. limit = final or latest limiting point
  811. limitation = a time period after which suits cannot be brought
  812. Lincoln's Birthday = the day on which President Abraham Lincoln is remembered
  813. local time = the official time in a local region
  814. long haul = a period of time sufficient for factors to work themselves out
  815. long run = a period of time sufficient for factors to work themselves out
  816. long time = a prolonged period of time
  817. longueur = a period of dullness or boredom
  818. Lord's Day = first day of the week
  819. Low Sunday = the Sunday following Easter
  820. Lower Carboniferous = from 345 million to 310 million years ago; increase of land areas; primitive ammonites
  821. Lower Carboniferous period = from 345 million to 310 million years ago; increase of land areas; primitive ammonites
  822. Lower Paleolithic = the oldest part of the Paleolithic Age with the emergence of the hand ax
  823. lull = a pause during which things are calm or activities are diminished
  824. luminous flux = the rate of flow of light energy
  825. lunar calendar = a calendar based on lunar cycles
  826. lunar day = the period of time taken for the moon to make one full rotation on its axis
  827. lunar month = the period between successive new moons
  828. lunar time period = there are usually two high and two low tides each day
  829. lunar year = a period of 12 lunar months
  830. lunation = the period between successive new moons
  831. lunch period = the customary or habitual hour for eating lunch
  832. lunchtime = the customary or habitual hour for eating lunch
  833. lunisolar calendar = a calendar based on both lunar and solar cycles
  834. lunitidal interval = interval between the moon's transit of a particular meridian and the next high tide at that meridian
  835. lustrum = a period of five years
  836. luteal phase = the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo
  837. M.M. = the pace of music measured by the number of beats occurring in 60 seconds
  838. Magh = the eleventh month of the Hindu calendar
  839. Magha = the eleventh month of the Hindu calendar
  840. maiden = an over in which no runs are scored
  841. maiden over = an over in which no runs are scored
  842. maidenhood = the childhood of a girl
  843. maidhood = the childhood of a girl
  844. major fast day = one of two major fast days on the Jewish calendar
  845. majority = the age at which persons are considered competent to manage their own affairs
  846. man hour = a time unit used in industry for measuring work
  847. manana = an indefinite time in the future
  848. Mar = the month following February and preceding April
  849. March = the month following February and preceding April
  850. March 17 = a day observed by the Irish to commemorate the patron saint of Ireland
  851. March 19 = a Christian holy day
  852. March 2 = Texans celebrate the anniversary of Texas' declaration of independence from Mexico in 1836
  853. March 25 = a festival commemorating the announcement of the Incarnation by the angel Gabriel to the Virgin Mary
  854. March equinox = March 21
  855. Mardi Gras = the last day before Lent
  856. Margasivsa = the ninth month of the Hindu calendar
  857. market day = a fixed day for holding a public market
  858. Martin Luther King Day = observed on the Monday closest to January 15
  859. Martin Luther King Jr's Birthday = observed on the Monday closest to January 15
  860. Martinmas = the feast of Saint Martin
  861. matins = the first canonical hour
  862. maturity = the period of time in your life after your physical growth has stopped and you are fully developed / the date on which an obligation must be repaid
  863. maturity date = the date on which an obligation must be repaid
  864. Maundy Thursday = the Thursday before Easter
  865. May = the month following April and preceding June
  866. May 1 = observed in many countries to celebrate the coming of spring
  867. May 24 = British, anniversary of Queen Victoria's birth
  868. May Day = observed in many countries to celebrate the coming of spring
  869. Mc = one million periods per second
  870. meal = any of the occasions for eating food that occur by custom or habit at more or less fixed times
  871. mealtime = the hour at which a meal is habitually or customarily eaten
  872. mean solar day = time for Earth to make a complete rotation on its axis
  873. mean solar time = time based on the motion of the mean sun
  874. mean time = time based on the motion of the mean sun
  875. meantime = the time between one event, process, or period and another
  876. meanwhile = the time between one event, process, or period and another
  877. megacycle = one million periods per second
  878. megacycle per second = one million periods per second
  879. megahertz = one million periods per second
  880. Memorial Day = legal holiday in the United States, last Monday in May
  881. meno mosso = played at reduced speed
  882. menopause = the time in a woman's life in which the menstrual cycle ends
  883. menstrual cycle = a recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy
  884. menstrual phase = the phase of the menstrual cycle during which the lining of the uterus is shed
  885. Mesasamkranti = Hindu solar holiday at the beginning of the new astrological year when the sun enters the constellation Aries
  886. Mesolithic = middle part of the Stone Age beginning about 15,000 years ago
  887. Mesolithic Age = middle part of the Stone Age beginning about 15,000 years ago
  888. Mesozoic = from 230 million to 63 million years ago
  889. Mesozoic era = from 230 million to 63 million years ago
  890. Messidor = tenth month of the Revolutionary calendar
  891. metabolic rate = rate of metabolism
  892. metronome marking = the pace of music measured by the number of beats occurring in 60 seconds
  893. MHz = one million periods per second
  894. Michaelmas = honoring the archangel Michael
  895. Michaelmas Day = honoring the archangel Michael
  896. Michaelmastide = the season of Michaelmas
  897. microsecond = one millionth (10^-6) of a second
  898. mid-April = the middle part of April
  899. mid-August = the middle part of August
  900. mid-December = the middle part of December
  901. mid-eighties = the time of life between 80 and 90
  902. mid-February = the middle part of February
  903. mid-fifties = the time of life between 50 and 60
  904. mid-forties = the time of life between 40 and 50
  905. mid-January = the middle part of January
  906. mid-July = the middle part of July
  907. mid-June = the middle part of June
  908. mid-March = the middle part of March
  909. mid-May = the middle part of May
  910. mid-nineties = the time of life between 90 and 100
  911. mid-November = the middle part of November
  912. mid-October = the middle part of October
  913. mid-September = the middle part of September
  914. mid-seventies = the time of life between 70 and 80
  915. mid-sixties = the time of life between 60 and 70
  916. mid-thirties = the time of life between 30 and 40
  917. mid-twenties = the time of life between 20 and 30
  918. midafternoon = the middle part of the afternoon
  919. midday = the middle of the day
  920. middle = time between the beginning and the end of a temporal period
  921. middle age = the time of life between youth and old age
  922. Middle Ages = the period of history between classical antiquity and the Italian Renaissance
  923. Middle Paleolithic = the time period of Neanderthal man
  924. middle watch = a watch during the night
  925. midnight = 12 o'clock at night
  926. midsummer = June 21, when the sun is at its northernmost point
  927. Midsummer Day = a quarter day in England, Wales, and Ireland
  928. Midsummer Eve = the night before Midsummer Day
  929. Midsummer Night = the night before Midsummer Day
  930. Midsummer's Day = a quarter day in England, Wales, and Ireland
  931. midterm = middle of an academic term or a political term in office / the middle of the gestation period
  932. midwatch = a watch during the night
  933. midweek = the middle of a week / the fourth day of the week
  934. midwinter = the middle of winter
  935. miles per hour = the ratio of the distance traveled (in miles) to the time spent traveling (in hours) / a speedometer reading for the momentary rate of travel
  936. millenary = a span of 1000 years / the 1000th anniversary
  937. millennium = a span of 1000 years / the 1000th anniversary (or the celebration of it) / (New Testament) in Revelations it is foretold that those faithful to Jesus will reign with Jesus over the earth for a thousand years; the meaning of these words have been much debated
  938. millisecond = one thousandth (10^-3) of a second
  939. min = a unit of time equal to 60 seconds or 1/60th of an hour
  940. minor fast day = one of five minor fast days on the Jewish calendar
  941. minority = any age prior to the legal age
  942. minute = a unit of time equal to 60 seconds or 1/60th of an hour / a particular point in time / an indefinitely short time
  943. Miocene = from 25 million to 13 million years ago
  944. Miocene epoch = from 25 million to 13 million years ago
  945. misdating = something located at a time when it could not have existed or occurred
  946. Missippian period = from 345 million to 310 million years ago; increase of land areas; primitive ammonites
  947. Mississippian = from 345 million to 310 million years ago; increase of land areas; primitive ammonites
  948. mistiming = something located at a time when it could not have existed or occurred
  949. mo = an indefinitely short time
  950. modern era = the present or recent times
  951. modern times = the circumstances and ideas of the present age
  952. modern world = the circumstances and ideas of the present age
  953. Mohammedan calendar = the lunar calendar used by Muslims; dates from 622 AD
  954. Moharram = the first month of the Islamic calendar
  955. moment = at this time / a particular point in time / an indefinitely short time
  956. moment of truth = a crucial moment on which much depends / the moment in a bullfight when the matador kills the bull
  957. Mon = the second day of the week
  958. Monday = the second day of the week
  959. monsoon = rainy season in southern Asia when the southwestern monsoon blows, bringing heavy rains
  960. month = a time unit of approximately 30 days / one of the twelve divisions of the calendar year
  961. month of Sundays = a time perceived as long
  962. moon = the period between successive new moons
  963. moratorium = a legally authorized postponement before some obligation must be discharged
  964. morn = the time period between dawn and noon
  965. morning = the time period between dawn and noon / the first light of day
  966. morning prayer = the first canonical hour
  967. morning time = the time period between dawn and noon
  968. morrow = the next day
  969. mortality = the ratio of deaths in an area to the population of that area
  970. mortality rate = the ratio of deaths in an area to the population of that area
  971. Moslem calendar = the lunar calendar used by Muslims; dates from 622 AD
  972. Mother's Day = second Sunday in May
  973. Mountain Standard Time = standard time in the 7th time zone west of Greenwich, reckoned at the 105th meridian west
  974. Mountain Time = standard time in the 7th time zone west of Greenwich, reckoned at the 105th meridian west
  975. movable feast = a religious holiday that falls on different dates in different years
  976. moveable feast = a religious holiday that falls on different dates in different years
  977. mph = the ratio of the distance traveled (in miles) to the time spent traveling (in hours) / a speedometer reading for the momentary rate of travel
  978. msec = one thousandth (10^-3) of a second
  979. MST = standard time in the 7th time zone west of Greenwich, reckoned at the 105th meridian west
  980. Muhammadan calendar = the lunar calendar used by Muslims; dates from 622 AD
  981. Muharram = the first month of the Islamic calendar
  982. Muharrum = the first month of the Islamic calendar
  983. multistage = occurring in more than one stage
  984. musical time = the beat of musical rhythm
  985. Muslim calendar = the lunar calendar used by Muslims; dates from 622 AD
  986. musth = an annual phase of heightened sexual excitement in the males of certain large mammals
  987. muzzle velocity = the velocity of a projectile as it leaves the muzzle of a gun
  988. name day = the feast day of a saint whose name one bears
  989. nanosecond = one billionth (10^-9) of a second
  990. nap = a period of time spent sleeping
  991. natal day = the date on which a person was born
  992. natality = the ratio of live births in an area to the population of that area
  993. national holiday = authorized by law and limiting work or official business
  994. Neolithic = latest part of the Stone Age beginning about 10,000 BC in the Middle East
  995. Neolithic Age = latest part of the Stone Age beginning about 10,000 BC in the Middle East
  996. neonatal mortality = the death rate during the first 28 days of life
  997. neonatal mortality rate = the death rate during the first 28 days of life
  998. neonatal period = the first 28 days of life
  999. neutron flux = the rate of flow of neutrons
  1000. New Deal = the historic period (1933-1940) in the United States during which President Franklin Roosevelt's economic policies were implemented
  1001. new moon = the time at which the Moon appears as a narrow waxing crescent
  1002. new phase of the moon = the time at which the Moon appears as a narrow waxing crescent
  1003. New Stone Age = latest part of the Stone Age beginning about 10,000 BC in the Middle East
  1004. New Style calendar = the solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years
  1005. New Year = the calendar year just begun
  1006. New Year's = the first day of the year
  1007. New Year's Day = the first day of the year
  1008. New Year's Eve = the last day of the year
  1009. New York minute = a very short time
  1010. night = the dark part of the diurnal cycle considered a time unit / the time after sunset and before sunrise while it is dark outside / the time between sunset and midnight / the period spent sleeping / a period of ignorance or backwardness or gloom / a shortening of nightfall
  1011. night shift = the work shift during the night
  1012. night watch = a watch during the night
  1013. nightfall = the time of day immediately following sunset
  1014. nighttime = the time after sunset and before sunrise while it is dark outside
  1015. nineties = the time of life between 90 and 100 / the decade from 1990 to 1999 / the decade from 1890 to 1899
  1016. Ninth of Ab = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  1017. Ninth of Av = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  1018. Nisan = the seventh month of the civil year
  1019. Nissan = the seventh month of the civil year
  1020. Nivose = fourth month of the Revolutionary calendar
  1021. Noel = period extending from Dec. 24 to Jan. 6
  1022. nonage = any age prior to the legal age
  1023. nonce = the present occasion
  1024. none = a canonical hour that is the ninth hour of the day counting from sunrise
  1025. nones = the fifth of the seven canonical hours
  1026. noon = the middle of the day
  1027. noonday = the middle of the day
  1028. noontide = the middle of the day
  1029. Noruz = the new year holiday in Iran and Azerbaijan and Afghanistan and Pakistan and parts of India and among the Kurds
  1030. note value = the relative duration of a musical note
  1031. Nov = the month following October and preceding December
  1032. November = the month following October and preceding December
  1033. November 1 = a Christian feast day honoring all the saints
  1034. November 11 = a legal holiday in the United States
  1035. November 2 = a day of supplication for all the souls in purgatory
  1036. November 5 = anniversary of the discovery of the Gunpowder Plot
  1037. noviciate = the period during which you are a novice
  1038. novitiate = the period during which you are a novice
  1039. now = the momentary present
  1040. nowadays = the period of time that is happening now
  1041. Nowrooz = the new year holiday in Iran and Azerbaijan and Afghanistan and Pakistan and parts of India and among the Kurds
  1042. Nowruz = the new year holiday in Iran and Azerbaijan and Afghanistan and Pakistan and parts of India and among the Kurds
  1043. Nyquist frequency = twice the maximum frequency occurring in the transmitted signal
  1044. Nyquist rate = the lowest sampling rate that will permit accurate reconstruction of a sampled analog signal
  1045. occasion = the time of a particular event
  1046. occupation = the period of time during which a place or position or nation is occupied
  1047. Oct = the month following September and preceding November
  1048. octave = a feast day and the seven days following it
  1049. October = the month following September and preceding November
  1050. October 12 = a legal holiday commemorating the discovery of America by Christopher Columbus
  1051. October 24 = a day for celebrating the founding of the United Nations
  1052. off year = a year in which no major political elections are held / a year in which productivity is low or inferior
  1053. off-day = a day when things go poorly
  1054. off-season = the season when travel is least active and rates are lowest
  1055. offing = the near or foreseeable future
  1056. offset = the time at which something is supposed to begin
  1057. oftenness = the number of occurrences within a given time period
  1058. old = past times
  1059. old age = a late time of life
  1060. Old Style calendar = the solar calendar introduced in Rome in 46 b.c. by Julius Caesar and slightly modified by Augustus, establishing the 12-month year of 365 days with each 4th year having 366 days and the months having 31 or 30 days except for February
  1061. old times = past times remembered with nostalgia
  1062. Oligocene = from 40 million to 25 million years ago
  1063. Oligocene epoch = from 40 million to 25 million years ago
  1064. Olympiad = one of the four-year intervals between Olympic Games
  1065. one-way light time = the elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object
  1066. oral phase = the first sexual and social stage of an infant's development
  1067. oral stage = the first sexual and social stage of an infant's development
  1068. orbit period = the time it takes to complete one full orbit around a celestial body
  1069. Ordovician = from 500 million to 425 million years ago
  1070. Ordovician period = from 500 million to 425 million years ago
  1071. outing = a day devoted to an outdoor social gathering
  1072. outset = the time at which something is supposed to begin
  1073. over = the division of play during which six balls are bowled at the batsman by one player from the other team from the same end of the pitch
  1074. overhead = the processing time required by a device prior to the execution of a command
  1075. overtime = work done in addition to regular working hours / playing time beyond regulation, to break a tie
  1076. overtime period = a period of overtime play to resolve a tie
  1077. OWLT = the elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object
  1078. pace = the rate of moving (especially walking or running) / the rate of some repeating event
  1079. Pacific Standard Time = standard time in the 8th time zone west of Greenwich, reckoned at the 120th meridian west
  1080. Pacific Time = standard time in the 8th time zone west of Greenwich, reckoned at the 120th meridian west
  1081. pacing = the speed at which a composition is to be played
  1082. paid vacation = a vacation from work by an employee with pay granted
  1083. Palaeolithic = second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC
  1084. Paleocene = from 63 million to 58 million years ago
  1085. Paleocene epoch = from 63 million to 58 million years ago
  1086. Paleolithic = second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC
  1087. Paleolithic Age = second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC
  1088. Paleozoic = from 544 million to about 230 million years ago
  1089. Paleozoic era = from 544 million to about 230 million years ago
  1090. Palm Sunday = Sunday before Easter
  1091. Pan American Day = a day celebrating political and economic unity among American countries
  1092. pancake day = the last day before Lent
  1093. Pansa = the tenth month of the Hindu calendar
  1094. Pasch = the Christian festival of Easter / the Jewish feast of the Passover
  1095. Pascha = the Christian festival of Easter / the Jewish feast of the Passover
  1096. pass = a written leave of absence
  1097. Passion Sunday = second Sunday before Easter
  1098. Passion Week = the week before Easter
  1099. Passover = a Jewish festival (traditionally 8 days from Nissan 15) celebrating the exodus of the Israelites from Egypt
  1100. past = the time that has elapsed / a earlier period in someone's life
  1101. past times = the time that has elapsed
  1102. patch = a period of indeterminate length (usually short) marked by some action or condition
  1103. Patriot's Day = the 3rd Monday in April
  1104. pause = a time interval during which there is a temporary cessation of something
  1105. payday = the day on which you receive pay for your work
  1106. peacetime = a period of time during which there is no war
  1107. peak = the period of greatest prosperity or productivity
  1108. peak season = the season when travel is most active and rates are highest
  1109. peculiar velocity = velocity with respect to the local standard of rest
  1110. Pennsylvanian = from 310 million to 280 million years ago; warm climate
  1111. Pennsylvanian period = from 310 million to 280 million years ago; warm climate
  1112. Pentecost = Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments / seventh Sunday after Easter; commemorates the emanation of the Holy Spirit to the Apostles
  1113. period = an amount of time / the end or completion of something / a unit of geological time during which a system of rocks formed / (ice hockey) one of three divisions into which play is divided in hockey games / the interval taken to complete one cycle of a regularly repeating phenomenon
  1114. period of play = the time during which play proceeds
  1115. period of time = an amount of time
  1116. Permian = from 280 million to 230 million years ago
  1117. Permian period = from 280 million to 230 million years ago
  1118. person hour = a time unit used in industry for measuring work
  1119. Pesach = a Jewish festival (traditionally 8 days from Nissan 15) celebrating the exodus of the Israelites from Egypt
  1120. Pesah = a Jewish festival (traditionally 8 days from Nissan 15) celebrating the exodus of the Israelites from Egypt
  1121. Phagun = the twelfth month of the Hindu calendar
  1122. Phalguna = the twelfth month of the Hindu calendar
  1123. phallic phase = the third stage in a child's development when awareness of and manipulation of the genitals is supposed to be a primary source of pleasure
  1124. phallic stage = the third stage in a child's development when awareness of and manipulation of the genitals is supposed to be a primary source of pleasure
  1125. Phanerozoic = the period from about 540 million years ago until the present, a period when abundant life existed
  1126. Phanerozoic aeon = the period from about 540 million years ago until the present, a period when abundant life existed
  1127. Phanerozoic eon = the period from about 540 million years ago until the present, a period when abundant life existed
  1128. phase = a particular point in the time of a cycle
  1129. phase angle = a particular point in the time of a cycle
  1130. phase of the moon = a time when the Moon presents a particular recurring appearance
  1131. picnic = a day devoted to an outdoor social gathering
  1132. picosecond = one trillionth (10^-12) of a second
  1133. piece = a period of indeterminate length (usually short) marked by some action or condition
  1134. pinpoint = a very brief moment
  1135. Platonic year = time required for one complete cycle of the precession of the equinoxes, about 25,800 years
  1136. play = the time during which play proceeds
  1137. playday = time for play or diversion
  1138. playing period = the time during which play proceeds
  1139. playtime = time for play or diversion
  1140. Pleistocene = from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere
  1141. Pleistocene epoch = from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere
  1142. Pliocene = from 13 million to 2 million years ago; growth of mountains; cooling of climate
  1143. Pliocene epoch = from 13 million to 2 million years ago; growth of mountains; cooling of climate
  1144. Pluviose = fifth month of the Revolutionary calendar
  1145. point = an instant of time
  1146. point in time = an instant of time
  1147. polling day = the day appointed for an election
  1148. Poppy Day = the Sunday nearest to November 11 when those who died in World War I and World War II are commemorated
  1149. postponement = time during which some action is awaited
  1150. Prairial = ninth month of the Revolutionary calendar
  1151. Precambrian = the eon following the Hadean time and preceding the Phanerozoic eon
  1152. Precambrian aeon = the eon following the Hadean time and preceding the Phanerozoic eon
  1153. Precambrian eon = the eon following the Hadean time and preceding the Phanerozoic eon
  1154. Precambrian period = the eon following the Hadean time and preceding the Phanerozoic eon
  1155. prehistoric culture = the time during the development of human culture before the appearance of the written word
  1156. prehistory = the time during the development of human culture before the appearance of the written word
  1157. prepuberty = a period of two years immediately prior to the onset of puberty when growth and changes leading to sexual maturity occur
  1158. preseason = a period prior to the beginning of the regular season which is devoted to training and preparation
  1159. present = the period of time that is happening now
  1160. present moment = at this time
  1161. present times = the circumstances and ideas of the present age
  1162. presidency = the tenure of a president
  1163. presidential term = the tenure of a president
  1164. Presidents' Day = the third Monday in February
  1165. press run = the period that presses run to produce an issue of a newspaper
  1166. prime = the time of maturity when power and vigor are greatest / the second canonical hour
  1167. prime of life = the time of maturity when power and vigor are greatest
  1168. prime time = the hours between 7 and 11 p.m. when the largest tv audience is available
  1169. print run = the period that presses run to produce an issue of a newspaper
  1170. Priscoan = the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks
  1171. Priscoan aeon = the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks
  1172. Priscoan eon = the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks
  1173. prison term = the period of time a prisoner is imprisoned
  1174. probation = a trial period during which an offender has time to redeem himself or herself / a trial period during which your character and abilities are tested to see whether you are suitable for work or for membership
  1175. processing time = the time it takes to complete a prescribed procedure
  1176. prohibition = the period from 1920 to 1933 when the sale of alcoholic beverages was prohibited in the United States by a constitutional amendment
  1177. prohibition era = the period from 1920 to 1933 when the sale of alcoholic beverages was prohibited in the United States by a constitutional amendment
  1178. Proterozoic = from 2,500 to 544 million years ago; bacteria and fungi
  1179. Proterozoic aeon = from 2,500 to 544 million years ago; bacteria and fungi
  1180. Proterozoic eon = from 2,500 to 544 million years ago; bacteria and fungi
  1181. PST = standard time in the 8th time zone west of Greenwich, reckoned at the 120th meridian west
  1182. psychological moment = the most appropriate time for achieving a desired effect
  1183. puberty = the time of life when sex glands become functional
  1184. pubescence = the time of life when sex glands become functional
  1185. public holiday = authorized by law and limiting work or official business
  1186. puerperium = time period following childbirth when the mother's uterus shrinks and the other functional and anatomic changes of pregnancy are resolved
  1187. pulse = the rate at which the heart beats
  1188. pulse rate = the rate at which the heart beats
  1189. Purim = a Jewish holy day commemorating their deliverance from massacre by Haman
  1190. Pus = the tenth month of the Hindu calendar
  1191. Quadragesima = the first Sunday in Lent
  1192. quadrennium = a period of four years
  1193. Quadrigesima Sunday = the first Sunday in Lent
  1194. quadruple time = a time signature indicating four beats to the bar
  1195. quarter = a fourth part of a year
  1196. quarter day = a Christian holy day
  1197. quarter-century = a period of 25 years
  1198. quarter-hour = a quarter of an hour
  1199. quatercentenary = the 400th anniversary
  1200. quatercentennial = the 400th anniversary
  1201. Quaternary = last 2 million years
  1202. Quaternary period = last 2 million years
  1203. quattrocento = the 15th century in Italian art and literature
  1204. question time = a period during a parliamentary session when members of British Parliament may ask questions of the ministers
  1205. quick time = a normal marching pace of 120 steps per minute
  1206. quincentenary = the 500th anniversary
  1207. quincentennial = the 500th anniversary
  1208. Quinquagesima = the Sunday before Ash Wednesday
  1209. Quinquagesima Sunday = the Sunday before Ash Wednesday
  1210. quinquennium = a period of five years
  1211. Rabi I = the third month of the Islamic calendar
  1212. Rabi II = the fourth month of the Islamic calendar
  1213. radial pulse = pulse of the radial artery
  1214. radial velocity = velocity along the line of sight toward or away from the observer
  1215. radiant flux = the rate of flow of radiant energy
  1216. rag = a week at British universities during which side-shows and processions of floats are organized to raise money for charities
  1217. rag day = a day on which university students hold a rag
  1218. rag week = a week at British universities during which side-shows and processions of floats are organized to raise money for charities
  1219. rain date = an alternative date set for some outdoor event in case it rains on the appointed date
  1220. rainy day = a (future) time of financial need
  1221. rainy season = one of the two seasons in tropical climates
  1222. Rajab = the seventh month of the Islamic calendar
  1223. Ramadan = the ninth month of the Islamic calendar; the month of fasting
  1224. Ramanavami = Hindu lunar holiday (on the 9th day of Caitra) to celebrate the birth of Rama
  1225. rate = a magnitude or frequency relative to a time unit
  1226. rate of attrition = the rate of shrinkage in size or number
  1227. rate of flow = the amount of fluid that flows in a given time
  1228. rate of growth = the rate of increase in size per unit time
  1229. rate of inflation = the rate of change of prices (as indicated by a price index) calculated on a monthly or annual basis
  1230. rate of respiration = the rate at which a person inhales and exhales
  1231. rate of return = the amount returned per unit of time expressed as a percentage of the cost
  1232. reaction time = the time that elapses between a stimulus and the response to it
  1233. real time = the time it takes for a process under computer control to occur / the actual time that it takes a process to occur
  1234. Recent = approximately the last 10,000 years
  1235. Recent epoch = approximately the last 10,000 years
  1236. Reconstruction = the period after the American Civil War when the southern states were reorganized and reintegrated into the Union
  1237. Reconstruction Period = the period after the American Civil War when the southern states were reorganized and reintegrated into the Union
  1238. red-letter day = a memorably happy or noteworthy day
  1239. refractory period = the time after a neuron fires or a muscle fiber contracts during which a stimulus will not evoke a response
  1240. Regency = the period from 1811-1820 when the Prince of Wales was regent during George III's periods of insanity / the period of time during which a regent governs
  1241. regulation time = the normal prescribed duration of a game
  1242. reign = the period during which a monarch is sovereign / a period during which something or somebody is dominant or powerful
  1243. Reign of Terror = the historic period (1793-94) during the French Revolution when thousands were executed / any period of brutal suppression thought to resemble the Reign of Terror in France
  1244. Rejoicing in the Law = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1245. Rejoicing of the Law = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1246. Rejoicing over the Law = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1247. relaxation time = the time constant of an exponential return of a system to equilibrium after a disturbance
  1248. relief = a pause for relaxation
  1249. religious festival = a festival having religious significance
  1250. religious holiday = a day specified for religious observance
  1251. Remembrance Day = the Sunday nearest to November 11 when those who died in World War I and World War II are commemorated
  1252. Remembrance Sunday = the Sunday nearest to November 11 when those who died in World War I and World War II are commemorated
  1253. Renaissance = the period of European history at the close of the Middle Ages and the rise of the modern world
  1254. Renascence = the period of European history at the close of the Middle Ages and the rise of the modern world
  1255. residence time = the period of time spent in a particular place
  1256. respiratory rate = the rate at which a person inhales and exhales
  1257. respite = a pause for relaxation
  1258. response time = the time that elapses between a stimulus and the response to it
  1259. rest = a pause for relaxation
  1260. rest day = a day set aside for rest
  1261. rest period = a pause for relaxation
  1262. Restoration = the reign of Charles II in England
  1263. retardation = the extent to which something is delayed or held back
  1264. return on invested capital = the amount, expressed as a percentage, that is earned on a company's total capital calculated by dividing the total capital into earnings before interest, taxes, or dividends are paid
  1265. return on investment = the amount, expressed as a percentage, that is earned on a company's total capital calculated by dividing the total capital into earnings before interest, taxes, or dividends are paid
  1266. rev = rate of revolution of a motor
  1267. Revolutionary calendar = the calendar adopted by the first French Republic in 1793 and abandoned in 1805
  1268. Revolutionary calendar month = a month in the Revolutionary calendar
  1269. revolutions per minute = rate of revolution of a motor
  1270. rhythm = an interval during which a recurring sequence of events occurs
  1271. Robert E Lee Day = celebrated in southern United States
  1272. Robert E Lee's Birthday = celebrated in southern United States
  1273. Rogation Day = one of the three days before Ascension Day
  1274. ROI = the amount, expressed as a percentage, that is earned on a company's total capital calculated by dividing the total capital into earnings before interest, taxes, or dividends are paid
  1275. Roman calendar = the lunar calendar in use in ancient Rome
  1276. Roman times = the time period during which Rome dominated Europe
  1277. Rosh Chodesh = the beginning of each month in the Jewish calendar
  1278. Rosh Hashana = a solemn Jewish feast day celebrated on the 1st or 1st and 2nd of Tishri
  1279. Rosh Hashanah = a solemn Jewish feast day celebrated on the 1st or 1st and 2nd of Tishri
  1280. Rosh Hashona = a solemn Jewish feast day celebrated on the 1st or 1st and 2nd of Tishri
  1281. Rosh Hashonah = a solemn Jewish feast day celebrated on the 1st or 1st and 2nd of Tishri
  1282. Rosh Hodesh = the beginning of each month in the Jewish calendar
  1283. rotational latency = the time it takes for a specific block of data on a data track to rotate around to the read/write head
  1284. round = a division during which one team is on the offensive / an interval during which a recurring sequence of events occurs
  1285. round-trip light time = the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point
  1286. rpm = rate of revolution of a motor
  1287. RTLT = the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point
  1288. rubato = a flexible tempo
  1289. rule = the duration of a monarch's or government's power
  1290. run = the continuous period of time during which something (a machine or a factory) operates or continues in operation
  1291. run-time = the length of time it takes to execute a software program / the time at which a (software or multimedia) program is run
  1292. running time = the length of time that a movie or tv show runs
  1293. rush hour = the times at the beginning and end of the working day when many people are traveling to or from work
  1294. s = 1/60 of a minute
  1295. Sabbath = a day of rest and worship: Sunday for most Christians; Saturday for the Jews and a few Christians
  1296. sabbatical = a leave usually taken every seventh year
  1297. sabbatical leave = a leave usually taken every seventh year
  1298. sabbatical year = a sabbatical leave lasting one year
  1299. Sabbatum = the seventh and last day of the week
  1300. Safar = the second month of the Islamic calendar
  1301. safe period = that time during a woman's menstrual cycle during which conception is least likely to occur
  1302. Saint Agnes's Eve = a Christian holy day
  1303. Saint Joseph = a Christian holy day
  1304. Saint Martin's summer = a period of unusually warm weather in the autumn
  1305. Saint Patrick's Day = a day observed by the Irish to commemorate the patron saint of Ireland
  1306. Saint Valentine's Day = a day for the exchange of tokens of affection
  1307. saint's day = a day commemorating a saint
  1308. Saints Peter and Paul = first celebrated in the 3rd century
  1309. salad days = the best time of youth
  1310. sampling frequency = the frequency of sampling a continuously varying signal
  1311. sampling rate = the frequency of sampling per unit time
  1312. Saphar = the second month of the Islamic calendar
  1313. Sat = the seventh and last day of the week
  1314. Saturday = the seventh and last day of the week
  1315. Sawan = the fifth month of the Hindu calendar
  1316. SCET = the coordinated universal time on board the spacecraft
  1317. school = the period of instruction in a school
  1318. school day = the period of instruction in a school
  1319. school term = the time during which a school holds classes
  1320. school year = the period of time each year when the school is open and people are studying
  1321. schooldays = the time of life when you are going to school
  1322. schooltime = the time of life when you are going to school / the period of instruction in a school
  1323. SCLK = the clock time given by a clock carried on board a spacecraft
  1324. season = one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions / a recurrent time marked by major holidays / a period of the year marked by special events or activities in some field
  1325. sec = 1/60 of a minute
  1326. second = 1/60 of a minute
  1327. second childhood = mental infirmity as a consequence of old age
  1328. second half = the second of two halves of play
  1329. second period = the second division into which the play of a game is divided
  1330. second trimester = time period extending from the 13th to the 27th week of gestation
  1331. secretory phase = the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo
  1332. sed rate = the rate at which red blood cells settle out in a tube of blood under standardized conditions
  1333. sedimentation rate = the rate at which red blood cells settle out in a tube of blood under standardized conditions
  1334. seedtime = the time during which seeds should be planted / any time of new development
  1335. seek time = the time it takes for a read/write head to move to a specific data track
  1336. sell-by date = a date stamped on perishable produce indicating the date by which it should be sold
  1337. semester = half a year
  1338. semicentenary = the 50th anniversary
  1339. semicentennial = the 50th anniversary
  1340. senility = mental infirmity as a consequence of old age
  1341. sentence = the period of time a prisoner is imprisoned
  1342. Sep = the month following August and preceding October
  1343. Sep 11 = the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
  1344. Sept = the month following August and preceding October
  1345. Sept. 11 = the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
  1346. September = the month following August and preceding October
  1347. September 11 = the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
  1348. September 17 = celebrated in the United States
  1349. September 29 = honoring the archangel Michael
  1350. September equinox = September 22
  1351. Septuagesima = the 3rd Sunday before Lent
  1352. Septuagesima Sunday = the 3rd Sunday before Lent
  1353. sesquicentennial = the 150th anniversary
  1354. session = the time during which a school holds classes
  1355. set = a unit of play in tennis or squash
  1356. seventies = the time of life between 70 and 80 / the decade from 1970 to 1979
  1357. sext = the fourth of the seven canonical hours
  1358. Sha'ban = the eighth month of the Islamic calendar
  1359. Shaaban = the eighth month of the Islamic calendar
  1360. Shabuoth = Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments
  1361. Shavous = Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments
  1362. Shavuot = Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments
  1363. Shavuoth = Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments
  1364. Shawwal = the tenth month of the Islamic calendar
  1365. Shebat = the fifth month of the civil year: the eleventh month of the ecclesiastical year in the Jewish calendar
  1366. sheepshearing = the time or season when sheep are sheared
  1367. shelf life = the length of time a packaged food or drug will last without deteriorating
  1368. Shevat = the fifth month of the civil year: the eleventh month of the ecclesiastical year in the Jewish calendar
  1369. shibah = a period of seven days of mourning after the death of close relative
  1370. shift = the time period during which you are at work
  1371. Shimchath Torah = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1372. ship's bell = each of the eight half-hour units of nautical time signaled by strokes of a ship's bell
  1373. shiva = a period of seven days of mourning after the death of close relative
  1374. shivah = a period of seven days of mourning after the death of close relative
  1375. shore leave = leave granted to a sailor or naval officer
  1376. show time = the point in time at which an entertainment (a movie or television show etc.) is scheduled to begin
  1377. showtime = the time at which something is supposed to begin
  1378. Shrove Tuesday = the last day before Lent
  1379. Shrovetide = immediately preceding Lent
  1380. sick leave = a leave of absence from work because of illness
  1381. sidereal day = the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
  1382. sidereal hour = 1/24 of a sidereal day
  1383. sidereal month = period between successive conjunctions with a star, 27.322 days
  1384. sidereal time = measured by the diurnal motion of stars
  1385. sidereal year = the time for the earth to make one complete revolution around the sun, relative to the fixed stars
  1386. silly season = a time usually late summer characterized by exaggerated news stories about frivolous matters for want of real news
  1387. Silurian = from 425 million to 405 million years ago
  1388. Silurian period = from 425 million to 405 million years ago
  1389. silver age = the second age of the world, characterized by opulence and irreligion
  1390. silver jubilee = an anniversary celebrating the passage of 25 years
  1391. silver wedding anniversary = the 25th wedding anniversary
  1392. Simchas Torah = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1393. Simchat Torah = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1394. Simhat Torah = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1395. Simhath Torah = a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
  1396. Sivan = the ninth month of the civil year
  1397. Siwan = the ninth month of the civil year
  1398. sixties = the time of life between 60 and 70 / the decade from 1960 to 1969
  1399. sleep = a period of time spent sleeping
  1400. slot = a time assigned on a schedule or agenda
  1401. slow time scale = the time scale used in data processing when the time-scale factor is greater than one
  1402. small hours = the hours just after midnight
  1403. snap = a spell of cold weather
  1404. social season = the season for major social events
  1405. solar calendar = a calendar based on solar cycles
  1406. solar constant = the rate at which radiant solar energy is received at the outer layer of the earth's atmosphere
  1407. solar day = time for Earth to make a complete rotation on its axis
  1408. solar month = one-twelfth of a solar or tropical year
  1409. solar year = the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
  1410. Solemnity of Mary = a holy day of obligation
  1411. solstice = either of the two times of the year when the sun is at its greatest distance from the celestial equator
  1412. space = the interval between two times
  1413. space age = the age beginning with the first space travel
  1414. spacecraft clock time = the clock time given by a clock carried on board a spacecraft
  1415. spacecraft event time = the coordinated universal time on board the spacecraft
  1416. spacing = the time between occurrences of a repeating event
  1417. span = the complete duration of something
  1418. spare time = time available for hobbies and other activities that you enjoy
  1419. speech day = an annual day in the schools when speeches are made and prizes are distributed
  1420. speed = distance travelled per unit time
  1421. speed of light = the speed at which light travels in a vacuum
  1422. spell = a period of indeterminate length (usually short) marked by some action or condition / a time period for working
  1423. split run = a print run of a newspaper during which some articles or advertisements are changed to produce a different edition
  1424. split second = a very short time
  1425. split shift = a working shift divided into two periods of time with several hours in between
  1426. spring = the season of growth
  1427. spring equinox = March 21
  1428. spring training = preseason training during the spring
  1429. springtime = the season of growth
  1430. Sravana = the fifth month of the Hindu calendar
  1431. St John's Day = a quarter day in England, Wales, and Ireland
  1432. St John's Eve = the night before Midsummer Day
  1433. St John's Night = the night before Midsummer Day
  1434. St Joseph = a Christian holy day
  1435. St Martin's Day = the feast of Saint Martin
  1436. St Patrick's Day = a day observed by the Irish to commemorate the patron saint of Ireland
  1437. St Valentine's Day = a day for the exchange of tokens of affection
  1438. stage = any distinct time period in a sequence of events
  1439. standard time = the official time in a local region
  1440. start = the time at which something is supposed to begin
  1441. starting point = earliest limiting point
  1442. starting time = the time at which something is supposed to begin
  1443. steerageway = the minimum rate of motion needed for a vessel to be maneuvered
  1444. stint = an unbroken period of time during which you do something
  1445. Stone Age = the earliest known period of human culture, characterized by the use of stone implements
  1446. stopping point = the temporal end
  1447. stretch = an unbroken period of time during which you do something
  1448. study hall = a period of time during the school day that is set aside for study
  1449. Succos = a major Jewish festival beginning on the eve of the 15th of Tishri and commemorating the shelter of the Israelites during their 40 years in the wilderness
  1450. Succoth = a major Jewish festival beginning on the eve of the 15th of Tishri and commemorating the shelter of the Israelites during their 40 years in the wilderness
  1451. sudden death = overtime in which play is stopped as soon as one contestant scores
  1452. Sukkoth = a major Jewish festival beginning on the eve of the 15th of Tishri and commemorating the shelter of the Israelites during their 40 years in the wilderness
  1453. summer = the period of finest development, happiness, or beauty / the warmest season of the year
  1454. summer school = an academic session during the summer
  1455. summer solstice = June 21, when the sun is at its northernmost point
  1456. summertime = the warmest season of the year
  1457. Sun = first day of the week
  1458. Sunday = first day of the week
  1459. sundown = the time in the evening at which the sun begins to fall below the horizon
  1460. sunrise = the first light of day
  1461. sunset = the time in the evening at which the sun begins to fall below the horizon
  1462. sunup = the first light of day
  1463. suppertime = the customary or habitual hour for the evening meal
  1464. suspension = a time interval during which there is a temporary cessation of something
  1465. swing shift = the work shift during the evening
  1466. synodic month = the period between successive new moons
  1467. Tabernacles = a major Jewish festival beginning on the eve of the 15th of Tishri and commemorating the shelter of the Israelites during their 40 years in the wilderness
  1468. tail = the time of the last part of something
  1469. tail end = the time of the last part of something
  1470. Tammuz = the tenth month of the civil year
  1471. TDT = a measure of time defined by Earth's orbital motion
  1472. Tebet = the fourth month of the civil year
  1473. technological revolution = the transformation from an agricultural to an industrial nation
  1474. teens = the time of life between the ages of 12 and 20
  1475. tempo = the speed at which a composition is to be played / the rate of some repeating event
  1476. tenure = the term during which some position is held
  1477. terahertz = one trillion periods per second
  1478. terce = the third canonical hour
  1479. tercentenary = the 300th anniversary
  1480. tercentennial = the 300th anniversary
  1481. term = a limited period of time / the end of gestation or point at which birth is imminent
  1482. term of a contract = the period of time during which a contract conveying property to a person is in effect
  1483. term of enlistment = a period of time spent in military service
  1484. term of office = the term during which some position is held
  1485. terminal leave = final leave before discharge from military service
  1486. terminal point = final or latest limiting point
  1487. terminal velocity = the constant maximum velocity reached by a body falling through the atmosphere under the attraction of gravity
  1488. termination = a coming to an end of a contract period
  1489. terminus a quo = earliest limiting point
  1490. terminus ad quem = final or latest limiting point
  1491. terrestrial dynamical time = a measure of time defined by Earth's orbital motion
  1492. terrestrial time = a measure of time defined by Earth's orbital motion
  1493. Tertiary = from 63 million to 2 million years ago
  1494. Tertiary period = from 63 million to 2 million years ago
  1495. test period = a period of time during which someone or something is tested
  1496. Tet = the New Year in Vietnam
  1497. Tevet = the fourth month of the civil year
  1498. Texas Independence Day = Texans celebrate the anniversary of Texas' declaration of independence from Mexico in 1836
  1499. Th = the fifth day of the week
  1500. Thammuz = the tenth month of the civil year
  1501. Thanksgiving = fourth Thursday in November in the United States; second Monday in October in Canada
  1502. Thanksgiving Day = fourth Thursday in November in the United States; second Monday in October in Canada
  1503. theatrical season = the season when new plays are produced
  1504. then = that time
  1505. Thermidor = eleventh month of the Revolutionary calendar
  1506. third trimester = time period extending from the 28th week of gestation until delivery
  1507. thirties = the time of life between 30 and 40 / the decade from 1930 to 1939
  1508. thirty-something = the time of life between 30 and 40
  1509. Three Kings' Day = twelve days after Christmas
  1510. threshold = the starting point for a new state or experience
  1511. Thursday = the fifth day of the week
  1512. THz = one trillion periods per second
  1513. tide = there are usually two high and two low tides each day
  1514. tiebreaker = overtime play in order to break a tie
  1515. tierce = the third canonical hour
  1516. time = an indefinite period (usually marked by specific attributes or activities) / a reading of a point in time as given by a clock / the fourth coordinate that is required (along with three spatial dimensions) to specify a physical event / the period of time a prisoner is imprisoned / a suitable moment / a period of time considered as a resource under your control and sufficient to accomplish something
  1517. time being = the present occasion
  1518. time constant = the time required for the current or voltage in a circuit to rise or fall exponentially through approximately 63 per cent of its amplitude
  1519. time frame = a time period during which something occurs or is expected to occur
  1520. time immemorial = the distant past beyond memory
  1521. time interval = a definite length of time marked off by two instants
  1522. time lag = time during which some action is awaited
  1523. time limit = a time period within which something must be done or completed
  1524. time of arrival = the time at which a public conveyance is scheduled to arrive at a given destination
  1525. time of day = clock time
  1526. time of departure = the time at which a public conveyance is scheduled to depart from a given point of origin
  1527. time of life = a period of time during which a person is normally in a particular life state
  1528. time of year = one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions
  1529. time off = a time period when you are not required to work
  1530. time out of mind = the distant past beyond memory
  1531. time period = an amount of time
  1532. time scale = an arrangement of events used as a measure of duration
  1533. time slot = a time assigned on a schedule or agenda
  1534. time to come = the time yet to come
  1535. time unit = a unit for measuring time periods
  1536. time value = the relative duration of a musical note
  1537. time-out = a brief suspension of play
  1538. timekeeping = the act or process of determining the time
  1539. times = a more or less definite period of time now or previously present
  1540. Tisha b'Ab = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  1541. Tisha b'Av = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  1542. Tishah b'Ab = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  1543. Tishah b'Av = a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
  1544. Tishri = the first month of the civil year
  1545. today = the day that includes the present moment (as opposed to yesterday or tomorrow) / the present time or age
  1546. tomorrow = the day after today / the near future
  1547. tonight = the present or immediately coming night
  1548. top = the first half of an inning
  1549. top of the inning = the first half of an inning
  1550. tour = a time period for working (after which you will be relieved by someone else) / a period of time spent in military service
  1551. tour of duty = a period of time spent in military service
  1552. track-to-track seek time = the time it takes for a read/write head to move to an adjacent data track
  1553. Transfiguration = a church festival held in commemoration of the Transfiguration of Jesus
  1554. Transfiguration Day = a church festival held in commemoration of the Transfiguration of Jesus
  1555. transmission time = the coordinated universal time when a transmission is sent from Earth to a spacecraft or other celestial body
  1556. travel time = a period of time spent traveling
  1557. trial period = a period of time during which someone or something is tested
  1558. Triassic = from 230 million to 190 million years ago; dinosaurs, marine reptiles
  1559. Triassic period = from 230 million to 190 million years ago; dinosaurs, marine reptiles
  1560. trice = a very short time
  1561. trick = a period of work or duty
  1562. triennial = the 300th anniversary
  1563. trimester = one of three divisions of an academic year / a period of three months
  1564. Trinity Sunday = eighth Sunday after Easter
  1565. triple time = musical time with three beats in each bar
  1566. triple-crown season = a season of baseball during which a player wins the triple crown
  1567. TRM = the coordinated universal time when a transmission is sent from Earth to a spacecraft or other celestial body
  1568. tropical year = the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
  1569. TT = a measure of time defined by Earth's orbital motion
  1570. Tues = the third day of the week
  1571. Tuesday = the third day of the week
  1572. turn = a division during which one team is on the offensive / a time period for working
  1573. turn of the century = the period from about ten years before to ten years after a new century
  1574. turnaround = time need to prepare a vessel or ship for a return trip
  1575. turnaround time = time need to prepare a vessel or ship for a return trip
  1576. Twelfth day = twelve days after Christmas
  1577. Twelfth night = eve of Twelfth day
  1578. Twelfthtide = the season of Epiphany
  1579. twelve noon = the middle of the day
  1580. twelvemonth = a period of time containing 365 (or 366) days
  1581. twenties = the time of life between 20 and 30 / the decade from 1920 to 1929
  1582. twentieth century = the century from 1901 to 2000
  1583. twenty-four hour period = time for Earth to make a complete rotation on its axis
  1584. twenty-four hours = time for Earth to make a complete rotation on its axis
  1585. twilight = the time of day immediately following sunset
  1586. twinkling = a very short time
  1587. two weeks = a period of fourteen consecutive days
  1588. unit of time = a unit for measuring time periods
  1589. United Nations Day = a day for celebrating the founding of the United Nations
  1590. universal time = the local time at the 0 meridian passing through Greenwich, England
  1591. Upper Carboniferous = from 310 million to 280 million years ago; warm climate
  1592. Upper Carboniferous period = from 310 million to 280 million years ago; warm climate
  1593. Upper Paleolithic = the time period during which only modern Homo sapiens was known to have existed
  1594. uptime = a period of time when something (as a machine or factory) is functioning and available for use
  1595. usance = the period of time permitted by commercial usage for the payment of a bill of exchange
  1596. UT = the local time at the 0 meridian passing through Greenwich, England
  1597. UT1 = the local time at the 0 meridian passing through Greenwich, England
  1598. UTC = Greenwich Mean Time updated with leap seconds
  1599. V-day = the day of a victory
  1600. V-E Day = the date of Allied victory in Europe, World War II
  1601. V-J Day = the date of Allied victory over Japan, World War II
  1602. vac = informal term for vacation
  1603. vacation = leisure time away from work devoted to rest or pleasure
  1604. vacay = informal term for vacation
  1605. Vaisakha = the second month of the Hindu calendar
  1606. Valentine Day = a day for the exchange of tokens of affection
  1607. Valentine's Day = a day for the exchange of tokens of affection
  1608. value = the relative duration of a musical note
  1609. Veadar = included seven times in every 19 years
  1610. velocity = distance travelled per unit time
  1611. Vendemiaire = first month of the Revolutionary calendar
  1612. Ventose = sixth month of the Revolutionary calendar
  1613. vernal equinox = March 21
  1614. vespers = the sixth of the seven canonical hours of the divine office; early evening
  1615. Veterans Day = a legal holiday in the United States
  1616. Veterans' Day = a legal holiday in the United States
  1617. vice-presidency = the tenure of a vice president
  1618. vice-presidential term = the tenure of a vice president
  1619. Victoria Day = a public holiday in Canada on the Monday on or before May 24th
  1620. Victorian age = a period in British history during the reign of Queen Victoria in the 19th century
  1621. Victory Day = the day of a victory
  1622. voting age = the age at which a person is old enough to vote in public elections
  1623. wait = time during which some action is awaited
  1624. Walpurgis Night = eve of May Day
  1625. wartime = a period of time during which there is armed conflict
  1626. washday = a day set aside for doing household laundry
  1627. washing day = a day set aside for doing household laundry
  1628. Washington's Birthday = the day on which George Washington is remembered
  1629. watch = a period of time (4 or 2 hours) during which some of a ship's crew are on duty / the period during which someone (especially a guard) is on duty
  1630. water under the bridge = past events to be put aside
  1631. Wed = the fourth day of the week
  1632. wedding anniversary = the anniversary of the day on which you were married
  1633. wedding day = the day of a wedding
  1634. wedding night = the night after the wedding when bride and groom sleep together
  1635. Wednesday = the fourth day of the week
  1636. wee = a short time
  1637. week = hours or days of work in a calendar week / a period of seven consecutive days starting on Sunday / any period of seven consecutive days
  1638. week from Monday = a time period of a week or more
  1639. weekday = any day except Sunday
  1640. weekend = a time period usually extending from Friday night through Sunday
  1641. weeknight = any night of the week except Saturday or Sunday
  1642. while = a period of indeterminate length (usually short) marked by some action or condition
  1643. Whit-Tuesday = the day after Whitmonday
  1644. Whitmonday = the day after Whitsunday
  1645. Whitsun = Christian holiday
  1646. Whitsun Monday = the day after Whitsunday
  1647. Whitsun Tuesday = the day after Whitmonday
  1648. Whitsunday = seventh Sunday after Easter; commemorates the emanation of the Holy Spirit to the Apostles
  1649. Whitsuntide = Christian holiday
  1650. Whitweek = Christian holiday
  1651. widowhood = the time of a woman's life when she is a widow
  1652. window = the time period that is considered best for starting or finishing something
  1653. wink = a very short time
  1654. winter = the coldest season of the year
  1655. winter solstice = December 22, when the sun is at its southernmost point
  1656. wintertime = the coldest season of the year
  1657. words per minute = the rate at which words are produced
  1658. work day = a day on which work is done
  1659. work shift = the time period during which you are at work
  1660. work time = a time period when you are required to work
  1661. workday = the amount of time that a worker must work for an agreed daily wage / a day on which work is done
  1662. working day = the amount of time that a worker must work for an agreed daily wage / a day on which work is done
  1663. workweek = hours or days of work in a calendar week
  1664. wpm = the rate at which words are produced
  1665. Xmas = a Christian holiday celebrating the birth of Christ
  1666. Y2K = the year 2000 in the Gregorian calendar
  1667. year = the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun / a period of time containing 365 (or 366) days / a period of time occupying a regular part of a calendar year that is used for some particular activity
  1668. year dot = as long ago as anyone can remember
  1669. year of grace = any year of the Christian era
  1670. year-end = the end of a calendar year
  1671. years = the time during which someone's life continues / a late time of life / a prolonged period of time
  1672. yesterday = the day immediately before today / the recent past
  1673. yesteryear = the time that has elapsed
  1674. Yom Kippur = a solemn and major fast day on the Jewish calendar; 10th of Tishri
  1675. yore = time long past
  1676. youth = the time of life between childhood and maturity / an early period of development
  1677. yr = a period of time containing 365 (or 366) days
  1678. Yukon Time = standard time in the 9th time zone west of Greenwich, reckoned at the 135th meridian west
  1679. Yule = period extending from Dec. 24 to Jan. 6
  1680. Yuletide = period extending from Dec. 24 to Jan. 6
  1681. zero hour = the time set for the start of an action or operation

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