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prochorion

noun pro·chorion \ (ˈ)prō+ \
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Definition of prochorion

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
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prochorionic

\(¦)prō+\ adjective

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Origin and Etymology of prochorion

New Latin, from 1pro- + chorion

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