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chorion
[ kawr-ee-on, kohr- ]
/ ˈkɔr iˌɒn, ˈkoʊr- /
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noun
Embryology. the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals.
Zoology. the membrane around the eggs of certain insects, secreted by cells of the ovary.
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Origin of chorion
1535–45; <New Latin <Greek chórion membrane enclosing the fetus
OTHER WORDS FROM chorion
cho·ri·on·ic, cho·ri·al, adjectivesub·cho·ri·on·ic, adjectiveWords nearby chorion
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use chorion in a sentence
British Dictionary definitions for chorion
chorion
/ (ˈkɔːrɪən) /
noun
the outer of two membranes that form a sac around the embryonic reptile, bird, or mammal: contributes to the placenta in mammalsSee also amnion
Derived forms of chorion
chorionic or chorial, adjectiveWord Origin for chorion
C16: from Greek khorion afterbirth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Scientific definitions for chorion
chorion
[ kôr′ē-ŏn′ ]
The outer membrane that encloses the embryo of a reptile, bird, or mammal. In mammals, the chorion contributes to the development of the placenta.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.