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Definitions and Synonyms of sac | Another word for sac | What is sac?

Definition 1: a structure resembling a bag in an animal - [noun denoting body]

(sac is a kind of ...) (anatomy) a natural hollow or sinus within the body

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

(... is a kind of sac ) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways

(... is a kind of sac ) a small anatomically normal sac or bladderlike structure (especially one containing fluid)

(... is a kind of sac ) (anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)

(... is a kind of sac ) a sac or cavity containing fluid especially lymph or cerebrospinal fluid

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

(... is a kind of sac ) one of the small sacs or saclike dilations in a compound gland

(... is a kind of sac ) a distensible membranous sac (usually containing liquid or gas)

(... is a kind of sac ) a small sac or pouch (especially the smaller chamber of the membranous labyrinth)

(... is a kind of sac ) any of the thin-walled extensions of the tracheae of insects

(... is a kind of sac ) any of the membranous air-filled extensions of the lungs of birds

(... is a kind of sac ) an air-filled sac near the spinal column in many fishes that helps maintain buoyancy

(... is a kind of sac ) the saclike body cavity of a coelenterate

(... is a kind of sac ) the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)

(... is a kind of sac ) thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

(... is a kind of sac ) membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional

(... is a kind of sac ) the membrane surrounding the heart

Definition 2: a member of the Algonquian people formerly living in Wisconsin in the Fox River valley and on the shores of Green Bay - [noun denoting person]

Synonyms for sac in the sense of this definition

(sac is a kind of ...) 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

(... is an instance of sac) Sauk leader who in 1832 led Fox and Sauk warriors against the United States (1767-1838)

(... is an instance of sac) Sauk leader who aided the United States against Black Hawk (1790-1848)

Definition 3: a case or sheath especially a pollen sac or moss capsule - [noun denoting plant]

Synonyms for sac in the sense of this definition

(sac is a kind of ...) a natural object that covers or envelops

"under a covering of dust" "the fox was flushed from its cover"

Definition 4: an enclosed space - [noun denoting shape]

Samples where sac or its synonyms are used according to this definition

  • the trapped miners found a pocket of air

Synonyms for sac in the sense of this definition

(sac is a kind of ...) space that is surrounded by something

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