/ Dictionary / Index D deism: Meaning and Definition of Find definitions for: de•ism Pronunciation: (dē'iz-um), [key] — n. belief in the existence of a God on the evidence of reason and nature only, with rejection of supernatural revelation (distinguished from theism). belief in a God who created the world but has since remained indifferent to it. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deism (Thesaurus) Deirdre deisolate Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language