Synonyms and Antonyms for yolk-sac

1. yolk sac (n.)

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

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2. yolk sac (n.)

membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional

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3. yolk (n.)

the yellow spherical part of an egg that is surrounded by the albumen

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4. yolk (n.)

nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg)

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5. sac (n.)

an enclosed space

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6. sac (n.)

a case or sheath especially a pollen sac or moss capsule

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8. Sac (n.)

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

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