Medical Dictionary
chorioallantois
noun cho·rio·al·lan·to·is
\ˌkōr-ē-ō-ə-ˈlant-ə-wəs, ˌkȯr-\
\ˌkōr-ē-ō-ə-ˈlant-ə-wəs, ˌkȯr-\
plural cho·rio·al·lan·to·ides \-ō-ˌal-ən-ˈtō-ə-ˌdēz, -ō-ˌal-ˌan-\
Medical Definition of 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 chorioallantoic membrane
—cho·rio·al·lan·to·ic \-ˌal-ən-ˈtō-ik\ adjective
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