English Explanatory Dictionary

yolk sac

English dictionary entry

Meanings

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

Word forms

yolk sac yolk sacs
This entry uses open data from Wiktionary (CC BY-SA/GFDL). Word forms are used for search and are not indexed as separate pages.
Back to search All on Y Russian dictionary Dahl dictionary