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allantoic | allantoid | allantoidal | allantoidea | allantoin | allantois | allargando | allatrate | allay | allayer | allayment

allantois

 : 
Noun
 : 
al=lan=to=is

CIDE DICTIONARY

allantoisn. 
     A membranous appendage of the embryos of mammals, birds, and reptiles, -- in mammals serving to connect the fetus with the parent; the urinary vesicle.  [1913 Webster]

OXFORD DICTIONARY

allantois, n. (pl. allantoides) Zool. one of several membranes that develop in embryonic reptiles, birds, or mammals.

Derivative
allantoic adj.
Etymology
mod.L f. Gk allantoeides sausage-shaped

For further exploring for "allantois" in Webster Dictionary Online


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