AMNION
amnion, amniotic sac, amnios
(noun) thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
Source: WordNet® 3.1
Etymology
Noun
amnion (plural amnions or amnia)
(anatomy) The innermost membrane of the fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.
Anagrams
• I'm 'onna, Manion, Minoan, moanin', nomina, on main
Source: Wiktionary
Am"ni*on, n. Etym: [Gr. (Anat.)
Definition: A thin membrane surrounding the embryos of mammals, birds, and
reptiles.
Source: Webster’s Unabridged Dictionary 1913 Edition