VITELLINE SAC

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

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

Synonyms:

umbilical vesicle; vesicula umbilicus; vitelline sac; yolk sac

Classified under:

Nouns denoting animals

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

sac (a structure resembling a bag in an animal)

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