/ Dictionary / Index S supremacist: Meaning and Definition of Find definitions for: su•prem•a•cist Pronunciation: (su-prem'u-sist, soo-), [key] — n. a person who believes in or advocates the supremacy of a particular group, esp. a racial group: a white supremacist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: supremacist (Thesaurus) supravital supremacy Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language