allantois

English dictionary entry

Meanings

noun

A sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles.

/əˈlæntəʊ.ɪs/

allantois allantoises allantoides

Ancient Greek ἀλλαντοειδής (allantoeidḗs, “sausage-shaped”). Compare Greek αλλαντικό (allantikó).

allantoic sac allantoid

allanto- allantoic

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