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Definition of a.m. abbreviation from the Oxford Advanced Learner's Dictionary

a.m.

abbreviation
 
/ˌeɪ ˈem/
 
/ˌeɪ ˈem/
(North American English also A.M.)
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  1. between 12 o'clock at night and 12 o'clock in the day (from Latin ‘ante meridiem’)
    • It starts at 10 a.m.
    compare p.m.
    Word Originfrom Latin ante meridiem.
See a.m. in the Oxford Advanced American Dictionary
Check pronunciation: a.m.

Nearby words

perspective
noun
 
 
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