/ Dictionary / Index D demonstrant: Meaning and Definition of Find definitions for: de•mon•strant Pronunciation: (du-mon'strunt), [key] — n. demonstrator (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. demonstrable demonstrate Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language