Breadcrumb Home > 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 TrendingHere are the facts and trivia that people are buzzing about. Animal Group Terminology Largest Countries in the World (by Area) Current Events This Week: January 2023 State Abbreviations Dinosaur Fossils (By U.S. State!) The Chinese Zodiac ✖ Related Content Daily Word Quiz: locution Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language