chorion
noun
the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
I had been concealing my pregnancy because a subchorionic hematoma made miscarriage likely.
From New York Times ● Apr. 26, 2017
