allantois
noun
\
ˌa-ˌlan-
\
Definition of allantois
: a vascular fetal membrane of reptiles, birds, and mammals that is formed as a pouch from the hindgut and that in placental mammals is intimately associated with the chorion in formation of the placenta
Other Words from allantois
ˌa-ˌlan-
\
adjective
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More Definitions for allantois
allantois
noun
\
ˌal-ˌan-
\
Medical Definition of allantois
: a vascular fetal membrane of reptiles, birds, or mammals that is formed as a pouch from the hindgut and that in placental mammals is intimately associated with the chorion in formation of the placenta
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