The term pm, Pm or PM, when used by itself can refer to:
- pm is short for post meridiem, Latin for "after noon". This is used to define hours of the day: The meeting ends at 5 pm. The opposite of pm is am.
- In chemistry, in the periodic table, Pm is the chemical symbol for promethium.
- In electrical engineering, PM is short for phase modulation.
- In government, PM is short for prime minister.
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