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The following statistics are based on the British National Corpus, so they are representative for the British English.

Distribution of usage frequency for the most common synonyms of the noun sac:


Sac is sometimes a misspelling of sack.

Video footage: A giant spider egg sac
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Definition of the noun sac

What does sac mean as a name of something?

noun - plural:

  • sac: sacs
  • Sac: Sacs

  1. an enclosed space
  2. a case or sheath especially a pollen sac or moss capsule
  3. a member of the Algonquian people formerly living in Wisconsin in the Fox River valley and on the shores of Green Bay
    • lexical domain: People - nouns denoting people
    • synonym of Sac: Sauk
    • more generic words: Algonquian / Algonquin = a member of any of the North American Indian groups speaking an Algonquian language and originally living in the subarctic regions of eastern Canada
    • instances:
      • Makataimeshekiakiak / Black Hawk = Sauk leader who in 1832 led Fox and Sauk warriors against the United States
      • Keokuk = Sauk leader who aided the United States against Black Hawk
  4. a structure resembling a bag in an animal
    • lexical domain: Body Parts - nouns denoting body parts
    • more generic terms: bodily cavity / cavity / cavum = a natural hollow or sinus within the body
    • more specific terms:
      • yolk sac = membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes
      • vesicula umbilicus / umbilical vesicle / vitelline sac / yolk sac = membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
      • amniotic sac / amnion / amnios = thin innermost membranous sac enclosing the developing embryo of higher vertebrates
      • chorion = the outermost membranous sac enclosing the embryo in higher vertebrates
      • coelenteron = the saclike body cavity of a coelenterate
      • swim bladder / air bladder / float = an air-filled sac near the spinal column in many fishes that helps maintain buoyancy
      • air sac = any of the membranous air-filled extensions of the lungs of birds
      • air sac = any of the thin-walled extensions of the tracheae of insects
      • sacculus / saccule = a small sac or pouch
      • bladder / vesica = a distensible membranous sac
      • acinus = one of the small sacs or saclike dilations in a compound gland
      • bursa = a small fluid-filled sac located between movable parts of the body especially at joints
      • cisterna / cistern = a sac or cavity containing fluid especially lymph or cerebrospinal fluid
      • pocket / pouch = saclike structure in any of various animals
      • vesicle / cyst = a small anatomically normal sac or bladderlike structure
      • air cell / alveolus / air sac = a tiny sac for holding air in the lungs
      • pericardial sac = the membrane surrounding the heart

Alternative definition of the noun sac


  1. A bag or pouch inside a plant or animal that typically contains a fluid.

Other definitions of sac

What does sac also mean?


  1. senior aircraftman
  2. [US] [military] Strategic Air Command
  3. saeclum ante Christum ("era before Christ")


"Sac" a.k.a. "Hair" is a 2010 drama film written and directed by Tayfun Pirselimoğlu.


"SAC" is a book by Richard G. Hubler.

  • also known as "SAC, the Strategic Air Command"


Sac is a fictional character from the 2011 film Pearls of the Far East.


  1. Sac a.k.a. Sacramento Executive Airport is a public airport three miles south of downtown Sacramento, in Sacramento County, California. The airport covers 540 acres and has three runways and a helipad.
  2. SAC is a Transit Stop.

There are other places with in their name, like Sac City, Sac County, Fond Du Sac, Prairie du Sac and Plain of the Cul-De-Sac.


  1. Sac a.k.a. Sač is a large metal or ceramic lid like a shallow bell with which bread dough or meat to be baked are covered, and over which ashes and live coals are placed. Restaurants all over the Balkan Peninsula, Bulgaria, Romania, Bosnia and Herzegovina, Croatia, Macedonia, Serbia, Montenegro, Kosovo, Greece and Turkey have adopted this traditional style of cooking, which allows the meat, fish and vegetables to remain juicy, and the potatoes to take on the taste of the meat. It is used also for cooking bread and traditional food as burek and pizza.
  2. Sac a.k.a. ascF is a gene.
  3. Sac a.k.a. ascG is a gene.
  4. Sac a.k.a. ascB is a gene.
  5. Sac a.k.a. Mesquakie Language is an human language.
    • also known as Sauk-fox, Sac And Fox, Meskwakie
  6. SAC a.k.a. Adenylyl cyclase, soluble is a protein.
  7. SAC a.k.a. Source of activation confusion model: SAC is a computational model of memory encoding and retrieval. It has been developed by Lynne M. Reder at Carnegie Mellon University. It shares many commonalities with ACT-R.
  8. Sac a.k.a. testicular soluble adenylyl cyclase is a gene.
    • also known as AH-related protein; ATP pyrophosphate-lyase; Hypercalciuria, absorptive, 2; soluble adenylyl cyclase; 3',5'-cyclic AMP synthetase; testicular soluble adenylyl cyclase (SAC); adenylate cyclase

Printed dictionaries and other books with definitions for Sac

Click on a title to look inside that book (if available):

Google previewGastrointestinal Tissue (2017)

Oxidative Stress and Dietary Antioxidants by Jordi Gracia-Sancho, M. Josepa Salvadó

SAC is a water-soluble organosulfur compound, its concentration increases during extraction. After oral administration, SAC...

SAC is the organosulfur compound of garlic with major safetiness and effectiveness.

Google previewImplementation of Functional Languages (2001)

12th International Workshop, IFL 2000 Aachen, Germany, September 4-7, 2000. Selected Papers by Markus Mohnen, Pieter Koopman

Sac is a functional array processing language particularly designed with numerical applications in mind. In this field the runtime performance of programs critically depends on the efficient utilization of the memory hierarchy. Cache conflicts ...

Google previewBovine Reproduction (2014)

by Richard M. Hopper

The innermost sac is the amnion, which surrounds the developing embryo; the outermost sac is the chorioallantois, which encircles the amnion and is composed of two separate tissues that fuse as the embryo develops. The outer layer is the ...

Google previewDonald School Textbook of Transvaginal Sonography (2013)

by Asim Kurjak, Jose Bajo Arenas

The secondary yolk sac is the unambiguous evidence of intrauterine gravidity. Until there is a detectable yolk sac inside the uterine cavity, we should always take ectopic pregnancy into account.8 Around 36—38 postmenstrual days, the ...

Google previewPrinciples of Animal Physiology (2016)

by CTI Reviews

The Yolk sac is a membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes,

Google previewClinical Anatomy by Regions (2011)

by Richard S. Snell

The hernial sac is a pouch (diverticulum) of peritoneum and has a neck and a body.

The hernial sac is the remains ofthe processus vaginalis (an outpouching of peritoneum that in the fetus is responsible for the formation of the inguinal canal ...

Google previewFundamentals of Diagnostic Radiology (2007)

by William E. Brant, Clyde A. Helms

The yolk sac is a 2- to 6-mm-diameter, spherical, cystic structure (Fig. 38.3) that is connected to the midgut of the embryo by...

The yolk sac is the earliest site of blood cell formation in the embryo. It floats freely in fluid between the amniotic and ...

Google previewThe Spectator (1916)

The acquired sac is a bulging of peritoneum through some congenitally weak spot, and this pouch of peritoneum has no intimate relationship or connection with the cord or round ligament, unless the individual has worn a truss over a ...

Google previewThe Rise of Birds (2015)

225 Million Years of Evolution by Sankar Chatterjee

The amnion sac is the characteristic of the amniote egg. The outer shell is semipermeable and is perforated by numerous tiny pores that allow the embryo to breathe. the nitrogenous waste of the embryo and facilitates respiration. It acts as a ...

Google previewWonders In Weeds (2011)

by William Smith

Sac is a fine old English word for a wine made of Fennel and Rue. To prepare it – wash and clean a handful of Fennel roots and three handsful of Rue and place in one gallon of water. Boil for half an hour. Strain through a fine sieve and add ...

Google previewLearning About Reptiles, Grades 4 - 8 (2002)

by Debbie Routh

The yolk sac is a membrane that surrounds the yolk, which is the food supply for the embryo.The allantois (uh LAN toe is) stores waste produced by the embryo. The chorion (KOR ee un) lines the outer shell, enclosing the embryo, all the other ...

Google previewClinical Obstetrics and Gynaecology (2014)

by Brian A. Magowan, Andrew Thomson, Philip Owen

It has a sac, neck and contents. The sac is a protrusion of the peritoneum of the POD and may contain small bowel or omentum.

Google previewThe American Encyclopedia and Dictionary of Ophthalmology (1916)

by Casey Albert Wood

by asserting that the connexions of the orbicularis muscle over the sac, is of ...

Google previewThe Oxford Encyclopedia of American Military and Diplomatic History (2013)

STRATEGIC AIR COMMAND The Strategic Air Command (SAC) was established in March 1946 to provide the United States with the ability to launch a nuclear attack—using long-range bombers—anywhere in the world. It was an ambitious ...

Online dictionaries and encyclopedias with entries for Sac

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Photos about Sac

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View more pictures about Sac City.

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Small photo of Sidewinder Rattlesnake giving birth to baby, still in egg sac.Small photo of Macro of a sac of potatoes at a food marketSmall photo of Cheiracanthium mildei (northern yellow sac spider)Small photo of Beautiful view of Cenote Sac Actún - Akumal, near Tulum city located in Yucatán Peninsula - MexicoSmall photo of Beautiful view of Cenote Sac Actún - Akumal, near Tulum city located in Yucatán Peninsula - MéxicoSmall photo of Meat Saute Turkish Et sote with wooden table - Hair Pie Meat - Sac Tava - Sac KavurmaSmall photo of Tulum - Mexico - February 27 2017 -Admiring the beautiful Cenote Sac Actún - Akumal, near Tulum city located in Yucatán Peninsula More...

Videos about Sac

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View more videos about air sac, Sac Bunt, Vocal sac, embryo sac, sac fungus, amniotic sac, lacrimal sac, and Liocranid sac spider.

See also the pronunciation examples of Sac!

Quotes about Sac

I think we all realized that we had really been replicating things that had already been happening. I don't know if we were smart enough to realize that we were in a cul-de-sac, but we were curious. (David Baker)
more quotes about sac...

Scrabble value of S1A1C3

The value of this 3-letter word is 5 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

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