Word Study
chorion
CIDE DICTIONARY
chorion, n. [NL., fr. Gr. .].
- The outer membrane which invests the fetus in the womb; also, the similar membrane investing many ova at certain stages of development. [1913 Webster]
- The outer membrane of seeds of plants. [1913 Webster]
OXFORD DICTIONARY
chorion, n. the outermost membrane surrounding an embryo of a reptile, bird, or mammal.
Derivative
chorionic adj.
Etymology
Gk khorion
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