m

m (http://definr.com/m)

     adj : denoting a quantity consisting of 1,000 items or units [syn:
            thousand, a thousand, one thousand, 1000, k]
     n 1: the basic unit of length adopted under the System
          International d'Unites (approximately 1.094 yards) [syn:
           meter, metre]
     2: concentration measured by the number of moles of solute per
        liter of solvent [syn: molarity, molar concentration,
        M]
     3: the cardinal number that is the product of 10 and 100 [syn:
        thousand, one thousand, 1000, M, K, chiliad, G,
         grand, thou, yard]
     4: the 13th letter of the Roman alphabet [syn: M]