PM

PM or pm (also written P.M. or p.m.) is an abbreviation for Latin post meridiem, meaning "after noon" in the 12-hour clock.

PM or Pm may also refer to:

Arts and entertainment

• Palm mute, a guitar playing technique
• PM (Australian radio program)
• PM (BBC Radio 4), UK
• PM Magazine, an American TV news program (1976–1991).
• PM (newspaper), US (1940–1948)
• PM Press, an American publishing company

Business and economics

Businesses

• P.M. Place Stores, a former US chain of discount stores
• Pere Marquette Railway, North America 1900–1947, reporting mark
• Philip Morris International, a tobacco company
• Tropic Air, IATA airline designator

Terminology

• Performance management of an organisation
• Preventive maintenance
• Project manager

Government and military

• Prime minister
• Polícia Militar, Brazilian military police
• Bureau of Political-Military Affairs, in the U.S. Department of State

People

• P.M. (author) or p.m., pseudonym of Hans Widmer (born 1947), Swiss author
• Pat Maloney Sr. (1924–2005), American trial lawyer

Science, technology, and mathematics

Biology and medicine

• Precision medicine
• Polymyositis, a disease

Chemistry and materials science

• PM3 (chemistry), in computational chemistry
• Particulate matter in the air
  • PM10, particulates smaller than 10 μm
• Powder metallurgy, a method of fabricating metals
• Promethium, chemical element number 61 (Pm)

Computing

• Particle Mesh, an algorithm for determining forces
• Perl module, file extension .pm
• Personal message or private message in messaging systems

Units of measurement

• Petameter, a length unit (10¹⁵ m) (Pm)
• Picometre, a length unit (10⁻¹² m) (pm)
• Picomolar (pM), a unit of molar concentration

Vehicles

• Martin PM, a version of the Naval Aircraft Factory PN flying boat
• Toyota PM, a concept car
• Pm36, a Polish steam locomotive
• PM3, a Blue Origin propulsion module for a suborbital rocket

Weapons

Guns and mortars

• PM-38, a Soviet light mortar
• PM-63 RAK, Polish submachine gun
• PM-84 Glauberyt, Polish submachine gun
• PM md 96, a Romanian submachine gun
• Makarov PM (Pistolet Makarova), a 1940s Soviet pistol
• Minebea PM-9, a Japanese submachine gun

Mines

• PM-43 and PM-68 mine, Finnish anti-personnel mines
• PM-60 mine, an East German anti-tank mine
• PM-79 mine, a Bulgarian anti-personnel mine

Other uses in science, technology, and mathematics

• PM-1, PM-2A, PM-3A, US Army portable nuclear reactors
• Phase modulation, in signal processing
• Polarization-maintaining optical fiber or PM fiber
• Principia Mathematica, by Whitehead and Russell

Other uses

• Passage Meditation, a form of meditation developed by Eknath Easwaran
• Saint Pierre and Miquelon (ISO 3166-1 alpha-2 country code)
  • .pm, top-level domain (ccTLD) for Saint Pierre and Miquelon

See also

• All pages with titles beginning with Pm
• All pages with titles beginning with PM
• All pages with titles containing pm