What does chorion mean?
The outermost membrane enveloping the embryo in birds and reptiles, and the fetus in mammals. In insects, the chorion is the outermost of the three membranes that surround the egg.
Example
"The chorion of the bird's egg is a protective layer that shields the developing chick."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.