post me·ri·di·em
| \ ˌpōs(t)-mə-ˈri-dē-əm
, -ˌem \
, -ˌem \
Definition of post meridiem
: being after noon
—abbreviation PM, p.m., or (British) pm
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“Post meridiem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/post%20meridiem. Accessed 19 May. 2022.
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Time Traveler for post meridiem
The first known use of post meridiem was in 1647
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