AmniotaAm`ni*o"ta\, n. pl. [NL. See Amnion.] (Zo["o]l.) That group of vertebrates which develops in its embryonic life the envelope called the amnion. It comprises the reptiles, the birds, and the mammals.
|higher vertebrates (reptiles, birds and mammals) possessing an amnion during development|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a stew of meat, vegetables, potatoes, etc.|