/ Dictionary / Index M messianism: Meaning and Definition of Find definitions for: mes•si•a•nism Pronunciation: (mes'ē-u-niz"um, mu-sī'u-), [key] — n. (often cap.) the belief in the coming of the Messiah, or a movement based on this belief. the belief in a leader, cause, or ideology as a savior or deliverer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Messiah Messidor Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language