/ Dictionary / Index M MGr.: Meaning and Definition of Find definitions for: MGr. Pronunciation: [key] Medieval Greek. mgr. Pronunciation: [key] manager. Monseigneur. Monsignor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mgmt mgt. Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language