/ Dictionary / Index G Gnosticism: Meaning and Definition of Find definitions for: Gnos•ti•cism Pronunciation: (nos'tu-siz"um), [key] — n. Rom. Cath. Ch. a group of ancient heresies, stressing escape from this world through the acquisition of esoteric knowledge. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gnosticism (Thesaurus) gnostic Gnosticize Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language