/ Dictionary / Index H heresimach: Meaning and Definition of Find definitions for: he•re•si•mach Pronunciation: (hu-rē'zu-mak", -su-, her'u-su-), [key] — n. a person engaged in combating heresy and heretics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heresiarch heresiography Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language