WordReference Random House Unabridged Dictionary of American English © 2017
mo  (mō),USA pronunciation n. [Informal.]
  1. Informal Termsmoment (def. 1).
  • by shortening

-mo, 
  • Printinga suffix occurring in a series of compounds that describe book sizes according to the number of leaves formed by the folding of a single sheet of paper:sixteenmo.
    • combining form extracted from duodecimo

    MO, 
    1. method of operation.
    2. Place NamesMissouri (approved esp. for use with zip code).
    3. mode of operation.
    4. modus operandi.

    Mo, [Symbol, Chem.]
  • Chemistrymolybdenum.

  • Mo., 
    1. Place NamesMissouri.
    2. Monday.

    mo., 
    1. pl.  mos. month.
    2. months.

    M.O., 
    1. mail order.
    2. manually operated.
    3. Medical Officer.
    4. method of operation.
    5. mode of operation.
    6. modus operandi.
    7. money order.

    m.o., 
    1. mail order.
    2. modus operandi.
    3. money order.

    WordReference Random House Learner's Dictionary of American English © 2017
    MO,  an abbreviation of:
    1. method or mode of operation.
    2. Place NamesMissouri.

    Mo.,  an abbreviation of:
    1. Place NamesMissouri.
    2. Monday.

    mo., pl.  mos.  an abbreviation of:
    1. month.

    M.O.,  an abbreviation of:
    1. method or mode of operation.
    2. modus operandi.
    3. money order.

    m.o.,  an abbreviation of:
    1. mail order.
    2. modus operandi.
    3. money order.


    Collins Concise English Dictionary © HarperCollins Publishers::

    mo /məʊ/ n informal
    1. chiefly Brit
      short for moment
    2. chiefly Austral
      short for moustache



    MO abbreviation for
    1. Missouri
    2. Medical Officer
    3. modus operandi



    Mo the chemical symbol for
    1. molybdenum



    -mo suffix forming nouns
    1. (in bookbinding) indicating book size by specifying the number of leaves formed by folding one sheet of paper: 12mo, twelvemo, or duodecimo, 16mo or sixteenmo
    Etymology: abstracted from duodecimo



    Mo. abbreviation for
    1. Missouri



    m.o., MO abbreviation for
    1. mail order
    2. money order



    'mooing' also found in these entries:
    moo
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