chorion

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noun cho·ri·on \ˈkȯr-ē-ˌän\

Definition of chorion

  1. :  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

Origin and Etymology of chorion

New Latin, from Greek, afterbirth


First Known Use: 1545


Medical Dictionary

chorion

play
noun cho·ri·on \ˈkōr-ē-ˌän, ˈkȯr-\

Medical Definition of chorion

  1. :  the highly vascular outer embryonic membrane that is associated with the allantois in the formation of the placenta


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