/ Dictionary / Index C combust: Meaning and Definition of Find definitions for: com•bust Pronunciation: (kum-bust'), [key] — v.i., v.t. burn. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: combust (Thesaurus) comb-out combustible Related Content Daily Word Quiz: wary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language