/ Dictionary / Index A amniote: Meaning and Definition of Find definitions for: am•ni•ote Pronunciation: (am'nē-ōt"), [key] — n. any vertebrate of the group Amniota, comprising the reptiles, birds, and mammals, characterized by having an amnion during the embryonic stage. Cf. anamniote. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: amniote (Thesaurus) amnion amniotic Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language