/ Dictionary / Index P probabilistic: Meaning and Definition of Find definitions for: prob•a•bi•lis•tic Pronunciation: (prob"u-bu-lis'tik), [key] — adj. of or pertaining to probability: probabilistic forecasting. of or pertaining to probabilism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: probabilistic (Thesaurus) probabilism probability Related Content Daily Word Quiz: abdicate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language