/ Dictionary / Index A archaeopteryx: Meaning and Definition of Find definitions for: ar•chae•op•ter•yx Pronunciation: (är"kē-op'tu-riks), [key] — n. a reptilelike fossil bird of the genus Archaeopteryx, from the late Jurassic Period, having teeth and a long, feathered, vertebrate tail. Cf. protoavis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: archaeopteryx (Thesaurus) archaeometry Archaeozoic Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language