/ Dictionary / Index P prognostic: Meaning and Definition of Find definitions for: prog•nos•tic Pronunciation: (prog-nos'tik), [key] — adj. of or pertaining to prognosis. predictive of something in the future: prognostic signs and symbols. —n. a forecast or prediction. an omen or portent; sign. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prognostic (Thesaurus) prognosis prognosticate Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language