/ Dictionary / Index M M, m: Meaning and Definition of Find definitions for: M Pronunciation: (em), [key] — pl. M'sorMs, m'sorms. the thirteenth letter of the English alphabet, a consonant. any spoken sound represented by the letter M or m, as in my, summer, or him. something having the shape of an a written or printed representation of the letter M or m. a device, as a printer's type, for reproducing the letter M or m. em. M Pronunciation: [key] mach. major. male. married. Medieval. medium. mega-. Middle. modal auxiliary. modifier. monetary aggregate: issued periodically by the Federal Reserve Board as various measures of money supply (etc.). Cf. motorway (used with a road number to designate a major highway): the M1. M Pronunciation: [key] the thirteenth in order or in a series, or, when I is omitted, the twelfth. (sometimes l.c.) the Roman numeral for 1000. Cf. magnetization. methionine. m Pronunciation: [key] mass. (of bonds) matured. medieval. medium. meter; meters. middle. minor. m Pronunciation: [key] magnetic pole strength. M- Pronunciation: [key] (used to designate the production model of military equipment, as the M-1 rifle.) m- Pronunciation: [key] meta-. M'- Pronunciation: [key] var. of M. Pronunciation: [key] — pl. MM. Majesty. Manitoba. markka; markkaa. Marquis. measure. medicine. medium. meridian. noon. Monday. Monsieur. mountain. m. Pronunciation: [key] male. (in Germany) mark; marks. married. masculine. mass. medium. noon. meter. middle. mile. minute. (in prescriptions) mix. modification of. modulus. molar. month. moon. morning. mouth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. LZ M-1 Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language