/ Dictionary / Index P positivism: Meaning and Definition of Find definitions for: pos•i•tiv•ism Pronunciation: (poz'i-tu-viz"um), [key] — n. the state or quality of being positive; definiteness; assurance. a philosophical system founded by Auguste Comte, concerned with positive facts and phenomena, and excluding speculation upon ultimate causes or origins. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: positivism (Thesaurus) positive ray positivity Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language