or M.R.

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or mr

  1. milliroentgen; milliroentgens.


plural Messrs. [mes-erz] /ˈmɛs ərz/.
  1. mister: a title of respect prefixed to a man's name or position: Mr. Lawson; Mr. President.
  2. a title prefixed to a mock surname that is used to represent possession of a particular attribute, identity, etc., especially in an idealized or excessive way: Mr. Democrat; Mr. Perfect; Mr. Macho. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for mr


noun plural Messrs (ˈmɛsəz)
  1. a title used before a man's name or names or before some office that he holdsMr Jones; Mr President
  2. (in military contexts) a title used in addressing a warrant officer, officer cadet, or junior naval officer
  3. a title placed before the surname of a surgeon

Word Origin for Mr

C17: abbreviation of mister


abbreviation for
  1. (in Britain) Master of the Rolls
  2. motivation(al) research
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mr


mid-15c., abbreviation of master (n.); also see mister. Used from 1814 with a following noun or adjective, to denote "the exemplar or embodiment of that quality" (e.g. Mr. Right "the only man a woman wishes to marry," 1826; Mr. Fix-It, 1912; Mr. Big, 1940). The plural Messrs. (1779) is an abbreviation of French messieurs, plural of monsieur, used in English to supply the plural of Mr., which is lacking.

Online Etymology Dictionary, © 2010 Douglas Harper