/ Dictionary / Index H Hiroshima: Meaning and Definition of Find definitions for: Hi•ro•shi•ma Pronunciation: (hēr"ō-shē'mu, hi-rō'shu-mu Japn. hē'rô-shē'mä), [key] — n. a seaport on SW Honshu, in SW Japan: first military use of atomic bomb August 6, 1945. 899,394. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hiroshima (Thesaurus) Hiroshige Hirsch Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language