M
M1 / em/ (also m) • n. (pl. Ms or M's) 1. the thirteenth letter of the alphabet.See also em. ∎ denoting the next after L in a set of items, categories, etc.2. (M) a shape like that of a capital M.3. the Roman numeral for 1,000.M2 • abbr. ∎ Majesty. ∎ male. ∎ Manitoba. ∎ markka; markkas. ∎ Marquis. ∎ Mus. measure. ∎ medicine. ∎ medium (as a clothes size). ∎ [in comb.] (in units of measurement) mega-: 8 Mbytes of memory. ∎ meridian. ∎ Astron. Messier (catalog of nebulae): the galaxy M33. ∎ Chem. (with reference to solutions) molar: 0.15 M NaCl solution. ∎ Monday. ∎ Monsieur: M Chirac. ∎ money, when used with a following numeral in measures of money supply: broad money, M3, grew by an annualized 9.7%. ∎ mountain. ∎ noon.M3 • symb. Physics mutual inductance.
