/ Dictionary / Index A atom bomb: Meaning and Definition of Find definitions for: at'om bomb'. Pronunciation: [key] See at•om-bomb Pronunciation: (at'um bom'), [key] — v.t. to bomb (a target) with an atomic bomb. —v.i. to atom-bomb a target. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. atom atomic Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language