What is "amnios"

Amnios \Am"ni*os\, n. Same as Amnion. [1913 Webster] ||

n. (context anatomy English) amnion

n. thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) [syn: amnion, amniotic sac]

Amnios is a 1991 computer game for the Amiga platform. It is a top-down multi-directional-scrolling shoot 'em up, set on ten planets across ten levels.