'amniotic sac' definitions:
Definition of '
amniotic sac
'
From:
WordNet
noun
Thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) [syn:
amnion
, amniotic sac,
amnios
]
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