MHz

from WordNet (r) 3.0 (2006)

MHz
    n 1: one million periods per second [syn: {megahertz}, {MHz},
         {megacycle per second}, {megacycle}, {Mc}]

from The Free On-line Dictionary of Computing (8 July 2008)

MegaHertz
MHz

   (MHz) Millions of cycles per second.  The unit of frequency
   used to measure the {clock rate} of modern digital logic,
   including {microprocessors}.

   (1994-10-27)