/ Dictionary / Index S scientist: Meaning and Definition of Find definitions for: sci•en•tist Pronunciation: (sī'un-tist), [key] — n. an expert in science, esp. one of the physical or natural sciences. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: scientist (Thesaurus) scientism scientistic Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language