/ Dictionary / Index M monomania: Meaning and Definition of Find definitions for: mon•o•ma•ni•a Pronunciation: (mon"u-mā'nē-u, -mān'yu), [key] — n. (no longer in technical use) a psychosis characterized by thoughts confined to one idea or group of ideas. an inordinate or obsessive zeal for or interest in a single thing, idea, subject, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: monomania (Thesaurus) monology monomer Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language