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The Collaborative International Dictionary of English v.0.48 (gcide)

mm \mm\, n.
millimeter; -- the IS standard abbreviation. [abbreviation]
[PJC]


mM \mM\, a. Chem.)
millimolar; -- the IS standard abbreviation. [abbreviation]
[PJC]


Monsieur \Mon*sieur"\, n.; pl. {Messieurs}. [F., fr. mon my
Sieur, abbrev. of seigneur lord. See {Monseigneur}.]
1. The common title of civility in France in speaking to, or
of, a man; Mr. or Sir. [Represented by the abbreviation M.
or Mons. in the singular, and by {MM.} or {Messrs.} in the
plural.]
[1913 Webster]

2. The oldest brother of the king of France.
[1913 Webster]

3. A Frenchman. [Contemptuous] --Shak.
[1913 Webster]