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A.M.

1.
a.m.
2.
Master of Arts.
Origin
< Latin Artium Magister

a.m.

1.
before noon.
2.
the period from midnight to noon, especially the period of daylight prior to noon:
Shall we meet Saturday a.m.?
3.
a morning newspaper, sometimes issued shortly before midnight.
Compare p.m
Origin
< Latin ante merīdiem
Usage note
The abbreviation a.m. for Latin ante meridiem, meaning “before noon,” refers to the period from midnight until noon. One minute before noon is 11:59 a.m. One minute after noon is 12:01 p.m. Many people distinguish between noon and midnight by saying 12 noon and 12 midnight. Expressions combining a.m. with morning (6 a.m. in the morning) and p.m. with afternoon, evening, or night (9 p.m. at night) are redundant and occur most often in casual speech and writing. Both a.m. and p.m. sometimes appear in capital letters, especially in printed matter.

Master of Arts

noun
1.
a master's degree given usually in a specific branch of the humanities or social sciences.
2.
a person who has been awarded this degree.
Abbreviation: M.A., A.M.
Origin
1490-1500

A and M

1.
Agricultural and Mechanical (college):
Texas A and M.
Also, A&M.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for a.m

a.m.

abbreviation (indicating the time period from midnight to midday)
1.
ante meridiem Compare p.m.
Word Origin
Latin: before noon

Master of Arts

noun
1.
a degree, usually postgraduate and in a nonscientific subject, or the holder of this degree MA
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
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Word Origin and History for a.m

a.m.

also AM, type of radio wave broadcast; see amplitude.

Online Etymology Dictionary, © 2010 Douglas Harper
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Related Abbreviations for a.m

a.m.

Latin ante meridiem (before noon)

A.M.

  1. airmail
  2. Latin anno mundi (in the year of the world)
  3. Latin ante meridiem (before noon)
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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