ALL meanings of chorion
cho·ri·on
C c - noun chorion the outer of two membranes that form a sac around the embryonic reptile, bird, or mammal: contributes to the placenta in mammals 3
- noun chorion the outermost of the two membranes that completely envelop a fetus 3
- noun chorion the outer membrane or shell of the eggs of insects and other invertebrates 3
- noun chorion Embryology. the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals. 1
- noun chorion Zoology. the membrane around the eggs of certain insects, secreted by cells of the ovary. 1
- noun chorion The outermost membrane surrounding an embryo of a reptile, bird, or mammal. In mammals (including humans), it contributes to the formation of the placenta. 1
- noun chorion (anatomy, biology) The protective and nutritive membrane in higher vertebrates that attaches the fetus to the uterus. 0
- noun chorion (biology, entomology) The outer case of an insect egg. 0
- noun chorion (botany) The outer membrane of seeds of plants. 0