/ Dictionary / Index S synergist: Meaning and Definition of Find definitions for: syn•er•gist Pronunciation: (sin'ur-jist, si-nûr'-), [key] — n. a body organ, medicine, etc., that cooperates with another or others to produce or enhance an effect. any admixture to a substance for increasing the effectiveness of one or more of its properties. a person who holds the doctrine of synergism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: synergist (Thesaurus) synergism synergistic Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language