The term pm, Pm or PM, when used by itself can refer to:

  1. 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.
  2. In chemistry, in the periodic table, Pm is the chemical symbol for promethium.
  3. In electrical engineering, PM is short for phase modulation.
  4. In government, PM is short for prime minister.

This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.