allantois
noun
al·lan·to·is ə-ˈlan-tə-wəs 
plural allantoides ˌa-lən-ˈtō-ə-ˌdēz
ˌa-ˌlan-
: 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
allantoic
ˌa-lən-ˈtō-ik
adjective ˌa-ˌlan-
Word History
Etymology
New Latin, ultimately from Greek allant-, allas sausage
First Known Use
1615, in the meaning defined above
Medical Definition
allantois
noun
al·lan·to·is ə-ˈlant-ə-wəs
plural allantoides ˌal-ən-ˈtō-ə-ˌdēz ˌal-ˌan-
ˌal-ˌan- : 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
- pseudepigraphic
- pseudepigraphical
- pseudepigraphies
- pseudepigraphon
- pseudepigraphous
- pseudepigraphs
- pseudepigraphy
- pseudepiscopacy
- pseudepiscopy
- pseudimago
- pseudimagos
- pseudo
- pseudo acid
- pseudo base
- pseudo-
- Pseudo-Clementine
- pseudo-event
- pseudo-fowl pest
- pseudo-intellectual
- pseudo-isidoran
- pseudo-isidorean
- pseudo-isidorian
- Pseudo-nitzchia
- pseudo-Pindaric ode
- pseudoaconine