prochorion

noun

pro·​chorion

(ˈ)prō+

plural prochorions or prochoria

: any of several structures surrounding the blastodermic vesicle in some animals (as rodents)

especially : a gelatinous coat that is probably a secretion of the uterine glands

prochorionic

(¦)prō+

adjective

Word History

Etymology

New Latin, from pro- entry 1 + chorion

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