/ Dictionary / Index T taggant: Meaning and Definition of Find definitions for: tag•gant Pronunciation: (tag'unt), [key] a nonreactive substance added to an explosive that may be traced if the explosive is used for unlawful purposes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tag end Taggard Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language