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Meaning of yolk sac | Babel Free

Noun CEFR B2

Definitions

A membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks, reptiles, birds, and primitive mammals.

Equivalents

Suomi ruskuaispussi

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

yolker yolkiness yolklessness Yolks Yoll Yolla

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