/ Dictionary / Index M monotheism: Meaning and Definition of Find definitions for: mon•o•the•ism Pronunciation: (mon'u-thē-iz"um), [key] — n. the doctrine or belief that there is only one God. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: monotheism (Thesaurus) monotechnic Monothelite Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language