# Unit of time

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## Definition of the noun unit of time

What does unit of time mean as a name of something?

**noun**

- a unit for measuring time periods
- lexical domain: Time - nouns denoting time and temporal relations
- synonym of unit of time: time unit
- more generic words: amount / measure / quantity = how much there is or how many there are of something that you can quantify
- more specific terms:
- twenty-four hour period / twenty-four hours / 24-hour interval / mean solar day / solar day / day = time for Earth to make a complete rotation on its axis
- night = the dark part of the diurnal cycle considered a time unit
- mean solar time / mean time = time based on the motion of the mean sun
- terrestrial dynamical time / terrestrial time / ephemeris time / TDT / TT = a measure of time defined by Earth's orbital motion
- month = a time unit of approximately 30 days
- sidereal day / day = the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
- ship's bell / bell = each of the eight half-hour units of nautical time signaled by strokes of a ship's bell
- 60 minutes / hour / hr = a period of time equal to 1/24th of a day
- 30 minutes / half-hour = a half of an hour
- quarter-hour / 15 minutes = a quarter of an hour
- minute / min = a unit of time equal to 60 seconds or 1/60th of an hour
- quarter = a unit of time equal to 15 minutes or a quarter of an hour
- second / sec / s = 1/60 of a minute
- attosecond = one quintillionth (10^-18) of a second
- femtosecond = one quadrillionth (10^-15) of a second
- picosecond = one trillionth (10^-12) of a second
- nanosecond = one billionth (10^-9) of a second
- microsecond = one millionth (10^-6) of a second
- millisecond / msec = one thousandth (10^-3) of a second

## Explanation

**Unit of time**: Use this property to list.

## Printed dictionaries and other books with definitions for Unit of time

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### Fox and McDonald's Introduction to Fluid Mechanics, 8th Edition (2010)

by Philip J. Pritchard

* the unit of time is the second* (s), and the unit of temperature is the
kelvin (K). Force is a secondary dimension, and its unit, the newton (N), ...

### Planetary and Lunar Coordinates for the Years 2001-2020 (2000)

by Great Britain. Nautical Almanac Office

mass and time- The astronomical unit of mass is the mass of the Sun, * the
astronomical unit of time is the day* (d), and...

### Theoretical Mechanics An Introductory Treatise on the Principles of Dynamics with Applications and Numberous Examples

* The unit of time is the time in which the Earth rotates relatively to this frame
through an angle equal to 1/86400 of four right angles, and this unit is the mean
solar second*. 270. The law of gravitation. When we say that the Earth is rotating,
...

### Dealing with Electronics (2014)

by Manfred Drosg, Michael Morten Steurer

* The unit of time is the second [s*]. The angular frequency ω with the unit [s −1] is
the conjugate variable to the time and is, therefore, the basis for the Fourier
transform (Section 3.1.1.3). The advancement of electronics is closely connected
to the ...

### Joe Celko's SQL for Smarties (2010)

Advanced SQL Programming by Joe Celko

The calendar is irregular and * the only ISO Standard unit of time is the second;
years, months, weeks, hours, minutes, and so forth are not part of the SI system,
but are mentioned in the ISO standards as conventions*. SQL-92 added temporal
...

### How Religious Scientists Play Down the Greatest of Einstein's Achievements (2008)

by Samuel K. K. Blankson

Every * unit of time is a fraction of the orbit of the sun known as 'one
year'*;. So Professor Eddington is right. There is no doubt that external reckoning
of ...

### Encyclopedia of Time (2013)

by Samuel L. Macey

The period is **the primary unit of time** and corresponds to the
interval during which rocks of a system were deposited. A more useful time scale,
...

### The Dictionary of Hindustani Classical Music (2000)

by Vimalakānta Rôya Caudhurī

Matra
Matra is a beat, **a measuring unit of time** interval. According to Sarhgitaratnakara,
a ...

### The London encyclopaedia, or, Universal dictionary of science, art, literature, and practical mechanics, by the orig. ed. of the Encyclopaedia metropolitana [T. Curtis]. (1839)

by Thomas Curtis (of Grove house sch, Islington)

Therefore let **a second be the unit of time**, a foot the unit of space and velocity, an
inch the unit of diameter of a ball or shell, and a pound avoirdupois the unit of
pressure, whether of weight or of resistance : therefore g is thirty-two feet.

### The Penguin Dictionary of Mathematics (2008)

Fourth edition by David Nelson

* The SI unit of time is the *second*. See alsoday; year; spacetime. time dilation
One of the effects predicted by the special theory of *relativity and since verified
experimentally. When two observers move at constant relative velocity, each will
...

### Abbreviations Dictionary, Tenth Edition (2001)

by Dean A. Stahl, Karen Landen

volume of
blood per **unit of time** Q(Q) quantity (microeconomics) Q (Latin—Quintus);
pseudonym for ...

### Encyclopaedia of Petroleum Science and Engineering (2003)

The solids discharge capacity of a decanting centrifuge is limited by the volume
of solids cake that can be moved by the conveyor and discharged by the under-
flow openings per **unit of time** .An effective decating centrifuge for weighted ...

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