Hypertext Webster Gateway: "amnion"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Amnion \Am"ni*on\, n. [Gr. ? the membrane round the fetus, dim.
of ? lamb.] (Anat.)
A thin membrane surrounding the embryos of mammals, birds,
and reptiles.
From WordNet (r) 1.7 (wn)
amnion
n : thin innermost membranous sac enclosing the developing
embryo in higher vertebrates (Amniota: reptiles; birds;
mammals) [syn: {amniotic sac}, {amnios}]
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