SINCE 1828
allantois
noun
al·lan·to·is
| \ ə-ˈlan-tə-wəs
\
\
plural allantoides\ ˌa-lən-ˈtō-ə-ˌdēz
, ˌa-ˌlan- \
, 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
allantoic
\ ˌa-lən-ˈtō-ik
, ˌa-ˌlan- \
adjective
, ˌa-ˌlan- \
adjective
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More Definitions for allantois
allantois
noun
al·lan·to·is
| \ ə-ˈlant-ə-wəs
\
\
plural allantoides\ ˌal-ən-ˈtō-ə-ˌdēz
, ˌal-ˌan-
\
, 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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Merriam-Webster unabridged
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