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post meridiem

adjective
post me·​ri·​di·​em | \ ˌpōs(t)-mə-ˈri-dē-əm How to pronounce post meridiem (audio) , -ˌem\

Definition of post meridiem

: being after noon —abbreviation PM, p.m., or (British) pm

First Known Use of post meridiem

1647, in the meaning defined above

History and Etymology for post meridiem

Latin

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The first known use of post meridiem was in 1647

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