/ Dictionary / Index A agnosticism: Meaning and Definition of Find definitions for: ag•nos•ti•cism Pronunciation: (ag-nos'tu-siz"um), [key] — n. the doctrine or belief of an agnostic. an intellectual doctrine or attitude affirming the uncertainty of all claims to ultimate knowledge. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: agnosticism (Thesaurus) agnostic Agnus Dei Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language