ALL meanings of chorioallantois
cho·ri·o·al·lan·to·is
C c - noun chorioallantois the membrane of a fetus that is formed by the merging of the allantois and the chorion 3
- noun chorioallantois an enveloping vascular fetal membrane formed by the fusion of chorion and allantois in reptiles, birds, and most mammals: that of chicks is used as a culture medium for growing viruses 3
- noun chorioallantois a vascular, extraembryonic membrane of birds, reptiles, and certain mammals, formed by the fusion of the wall of the chorion with the wall of the allantois. 1
- noun chorioallantois A vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois that in the hen's egg is used as a living culture medium for viruses and for tissues—called also. 1
- noun chorioallantois (anatomy) The vascular extraembryonic membrane, formed by the fusion of the allantois and the chorion, that makes up the placenta in most mammals; the chorioallantoic membrane. 0