/ Dictionary / Index V volcanic bomb: Meaning and Definition of Find definitions for: volcan'ic bomb' Pronunciation: [key] — Geol. Geol. bomb (def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. volcanic ash volcanic cone Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language