SAC

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does Sac mean? 

• SAC (noun)
  The noun SAC has 4 senses:

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

4. a structure resembling a bag in an animal

  Familiarity information: SAC used as a noun is uncommon.

 Dictionary entry details 

• SAC (noun)

Sense 1

Meaning:

An enclosed space

Classified under:

Nouns denoting two and three dimensional shapes

Synonyms:

pocket; pouch; sac; sack

Context example:

the trapped miners found a pocket of air

Hypernyms ("sac" is a kind of...):

cavity; enclosed space (space that is surrounded by something)

Sense 2

Meaning:

A case or sheath especially a pollen sac or moss capsule

Classified under:

Nouns denoting plants

Synonyms:

sac; theca

Hypernyms ("sac" is a kind of...):

cover; covering; natural covering (a natural object that covers or envelops)

Sense 3

Meaning:

A member of the Algonquian people formerly living in Wisconsin in the Fox River valley and on the shores of Green Bay

Classified under:

Nouns denoting people

Synonyms:

Sac; Sauk

Hypernyms ("Sac" is a kind of...):

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; many Algonquian tribes migrated south into the woodlands from the Mississippi River to the Atlantic coast)

Instance hyponyms:

Black Hawk; Makataimeshekiakiak (Sauk leader who in 1832 led Fox and Sauk warriors against the United States (1767-1838))

Keokuk (Sauk leader who aided the United States against Black Hawk (1790-1848))

Sense 4

Meaning:

A structure resembling a bag in an animal

Classified under:

Nouns denoting body parts

Hypernyms ("sac" is a kind of...):

bodily cavity; cavity; cavum ((anatomy) a natural hollow or sinus within the body)

Hyponyms (each of the following is a kind of "sac"):

umbilical vesicle; vesicula umbilicus; vitelline sac; yolk sac (membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional)

pericardial sac (the membrane surrounding the heart)

air cell; air sac; alveolus (a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways)

cyst; vesicle (a small anatomically normal sac or bladderlike structure (especially one containing fluid))

pocket; pouch ((anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican))

cistern; cisterna (a sac or cavity containing fluid especially lymph or cerebrospinal fluid)

bursa (a small fluid-filled sac located between movable parts of the body especially at joints)

acinus (one of the small sacs or saclike dilations in a compound gland)

bladder; vesica (a distensible membranous sac (usually containing liquid or gas))

saccule; sacculus (a small sac or pouch (especially the smaller chamber of the membranous labyrinth))

air sac (any of the thin-walled extensions of the tracheae of insects)

air sac (any of the membranous air-filled extensions of the lungs of birds)

air bladder; float; swim bladder (an air-filled sac near the spinal column in many fishes that helps maintain buoyancy)

coelenteron (the saclike body cavity of a coelenterate)

chorion (the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals))

amnion; amnios; amniotic sac (thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals))

yolk sac (membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo)

 Context examples 

A fluid filled sac within the cerebrum.

(Cerebral Cyst, NCI Thesaurus)

It includes the dysgerminoma, yolk sac tumor, choriocarcinoma, embryonal carcinoma and immature teratoma.

(Childhood Malignant Ovarian Germ Cell Tumor, NCI Thesaurus)

It was, and had always been, a cul-de-sac.

(The Lost World, by Sir Arthur Conan Doyle)

A small sac formed by a membrane and filled with liquid.

(Cellular Vesicle, NCI Dictionary)

A silicone gel-filled or saline-filled sac placed under the chest muscle to restore breast shape.

(Breast implant, NCI Dictionary)

In medicine, a sac of tissue and blood vessels that surrounds an organ, joint, or tumor.

(Capsule, NCI Dictionary)

This category includes teratoma, choriocarcinoma, embryonal carcinoma, and yolk sac tumor.

(Nongerminomatous Germ Cell Tumor, NCI Thesaurus)

The most common combination of germ cell elements is dysgerminoma and yolk sac tumor.

(Ovarian Mixed Germ Cell Tumor, NCI Thesaurus)

The outer layer of the pericardium, which is a thin sac of tissue that surrounds the heart.

(Parietal pericardium, NCI Dictionary)

An abnormal collection of fluid inside the sac that covers the heart.

(Pericardial effusion, NCI Dictionary)