/ Dictionary / Index O ornithopter: Meaning and Definition of Find definitions for: or•ni•thop•ter Pronunciation: (ôr"nu-thop'tur), [key] — n. a heavier-than-air craft designed to be propelled through the air by flapping wings. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ornithopter (Thesaurus) ornithopod ornithorhynchus Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language