/ Dictionary / Index P pteranodon: Meaning and Definition of Find definitions for: pter•an•o•don Pronunciation: (tu-ran'u-don"), [key] — n. a flying reptile of the extinct order Pterosauria, from the Cretaceous Period, having a wingspread of about 25 feet (8 m). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pter- pterido- Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language