PM

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

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• PM was a politically leftist U.S. newspaper in the late 1940s and early 1950s.
• BBC Radio 4 radio programme PM
• Particulate Matter, fine dust and soot suspended in the air.
• Pere Marquette Railroad {{reporting mark|PM}}
• Perry Mason
• petametre, a length unit (10¹⁵ m) (Pm)
• phase modulation, in electrical engineering
• picometre, a length unit (10^-12 m) (pm)
• Saint-Pierre and Miquelon: ISO 3166-1 alpha-2 country code
• Pocket Monsters
• Pontifex Maximus, The Pope (P·M·)
• Postmaster
• PM is short for post meridiem (also written P.M. and pm), Latin for "after noon". This is used to disambiguate hours of the day, in the 12-hour clock system.
• Postmortem or Post Mortem
• Preventative Maintenance
• prime minister, in government.
• Principia Mathematica, in set theory
• Private Message, in Internet slang
• promethium, in chemistry (Pm).