/ Dictionary / Index M metanoia: Meaning and Definition of Find definitions for: met•a•noi•a Pronunciation: (met"u-noi'u), [key] — n. a profound, usually spiritual, transformation; conversion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metanitrophenol metapelet* Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language