| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024cho•ri•on (kôr′ē on′, kōr′-),USA pronunciation n. - Developmental Biology[Embryol.]the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals.
- [Zool.]the membrane around the eggs of certain insects, secreted by cells of the ovary.
- Greek chórion membrane enclosing the fetus
- Neo-Latin
- 1535–45
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