/ Dictionary / Index A Apollyon: Meaning and Definition of Find definitions for: A•pol•lyon Pronunciation: (u-pol'yun), [key] — n. the destroyer; the angel of the bottomless pit; Abaddon. Rev. 9:11. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Apollonius Dyscolus apologetic Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language