/ Dictionary / Index M Marcomanni: Meaning and Definition of Find definitions for: Mar•co•man•ni Pronunciation: (mär"kō-man'ī), [key] — n. (used with a pl. v.) an ancient Germanic people who lived in central Europe. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Marcionite Marconi Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language