/ Dictionary / Index D demonstrable: Meaning and Definition of Find definitions for: de•mon•stra•ble Pronunciation: (di-mon'stru-bul, dem'un-), [key] — adj. capable of being demonstrated or proved. clearly evident; obvious: a demonstrable lack of concern for the general welfare. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: demonstrable (Thesaurus) Demon Star demonstrant 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