/ Dictionary / Index P pterodactyl: Meaning and Definition of Find definitions for: pter•o•dac•tyl Pronunciation: (ter"u-dak'til), [key] — n. any of a number of genera of flying reptiles of the extinct order Pterosauria, from the Jurassic and Cretaceous periods, having a highly reduced tail and teeth and a birdlike beak. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pterodactyl (Thesaurus) pterocarpous pteroma Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language