/ Dictionary / Index A Abaddon: Meaning and Definition of Find definitions for: A•bad•don Pronunciation: (u-bad'n), [key] — n. Apollyon. a place of destruction; the depths of hell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Abadan ab aeterno* Related Content Daily Word Quiz: inane Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language