allantois
About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.
About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.al·lan·to·is
noun \ə-ˈlan-tə-wəs\ plural al·lan·to·ides \ˌa-lən-ˈtō-ə-ˌdēz, 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
— al·lan·to·ic \ˌa-lən-ˈtō-ik, ˌa-ˌlan-\ adjective
Origin of ALLANTOIS
New Latin, ultimately from Greek allant-, allas sausage
First Known Use: 1646
al·lan·to·is
noun \ə-ˈlant-ə-wəs\ (Medical Dictionary)plural ; al·lan·to·ides \ˌal-ən-ˈtō-ə-ˌdēz, ˌal-ˌan-\ (audio pronunciation) (audio pronunciation)
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
Learn More About ALLANTOIS
Browse
Next Word in the Dictionary: allantoxaidin
Previous Word in the Dictionary: allantoinase
All Words Near: allantois
Previous Word in the Dictionary: allantoinase
All Words Near: allantois
Seen & Heard 
What made you want to look up allantois? Please tell us where you read or heard it (including the quote, if possible).
