chorion
noun
cho·ri·on
ˈkȯr-ē-ˌän 
: the highly vascular outer embryonic membrane of reptiles, birds, and mammals that in placental mammals is associated with the allantois in the formation of the placenta
Examples of chorion in a Sentence
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If the split is delayed, usually a week or so after conception, the processes of growing a placenta, chorion, and amniotic sac are already underway.
—
Pamela Prindle Fierro, Parents, 30 July 2024
This is essentially a blood clot that can occur when the outermost membrane surrounding the embryo (the chorion) separates a little from the uterine wall, allowing some blood to pool in that space between the two.
—Amy Marturana, SELF, 28 Dec. 2018
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Pamela Prindle Fierro, Parents, 30 July 2024
This is essentially a blood clot that can occur when the outermost membrane surrounding the embryo (the chorion) separates a little from the uterine wall, allowing some blood to pool in that space between the two.
—Amy Marturana, SELF, 28 Dec. 2018
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“Chorion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chorion. Accessed 16 Nov. 2024.
Copy CitationKids Definition
chorion
noun
cho·ri·on
ˈkōr-ē-ˌän
ˈkȯr-
: the outer membrane that surrounds the embryo of reptiles, birds, and mammals and that in mammals with a placenta contributes to the formation of the placenta
chorionic
adjective
ˌkōr-ē-ˈän-ik
ˌkȯr-
Medical Definition
chorion
noun
cho·ri·on
ˈkōr-ē-ˌän, ˈkȯr-
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