What does a.m. p.m. stand for?
A.M. stands for the Latin phrase "Ante meridiem", which means before noon. P.M. stands for "Post meridiem", or after noon.
From the Latin words meridies (midday), ante (before) and post (after), the term ante meridiem (a.m.) means before midday and post meridiem (p.m.) means after midday.
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