2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Allantois \Al*lan"to*is\, Allantoid \Al*lan"toid\, ] n.. (Anat.)
A membranous appendage of the embryos of mammals, birds, and
reptiles, -- in mammals serving to connect the fetus with the
parent; the urinary vesicle.
From WordNet r 1.6 [wn]:
allantois
n : vascular fetal membrane that develops from the hindgut in
embryonic higher vertebrates (mammals; birds; reptiles)
more about allantois
browse words by letter
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
or search
thesauri
dictionary
search words
|
