PM

PM (also written P.M., p.m., and pm) often means "after noon" in the 12-hour clock (Latin Post meridiem).

PM or Pm may also refer to:

Sciences

• Particulate matter, particulates — fine dust and soot — suspended in the air
  • PM10, particulates, smaller than 10 μm, that can cause health problems
• PM3 (chemistry), or Parameterized Model number 3 - a modelling method in computational chemistry
• Permanent magnet, an object which stays magnetised without external effort or mason.
• Perpetual motion, refers to movement that goes on forever
• Petameter, a length unit (10¹⁵ m) (Pm)
• Phase modulation, in electrical engineering
• PM tube, Photomultiplier tube.
• Picometre, a length unit (10⁻¹² m) (pm)
• Plasma membrane, is a selectively permeable lipid bilayer found in all cells
• Powdery mildew, a fungal disease that affects a wide range of plants
• Powder metallurgy, a method of fabricating metals.
• Premolar tooth, dental nomenclature
• Promethium, chemical element number 61 (Pm)
• Polymyositis, disease
• Post mortem, a medical examination carried out after death
• Principia Mathematica, a three-volume work on the foundations of mathematics
• Polarization-maintaining optical fiber
• Participatory medicine, a new model of medicine

People

• P.M. (author), an anonymous Swiss author
• P. M. Aboobacker, Indian Muslim political leader in Kerala
• P. M. Blau (1918–2002), American sociologist and theorist; see Peter Blau
• P. M. Cohn (1924–2006), German-born British mathematician; Paul Cohn
• P.M. Daka, Zambian member of Pan-African Parliament; see Peter Daka
• P. M. Henry (1849–1903), or Prosper Henry, French optician and astronomer; see Paul Henry and Prosper Henry
• P. M. Hubbard (1910–1980), British writer
• P. M. Kilmartin, New Zealand astronomer; see Pamela M. Kilmartin
• P.M. McCullough (1893–1981), American actor; see Philo McCullough
• P. M. Pasinetti (1913–2006), Italian novelist, professor and journalist
• P. M. Pu (1910–1988), Chinese mathematician; see Pao Ming Pu
• P. M. Radhakrishnan (1946–2010), Indian football player, coach, referee and administrator
• P. M. Sayeed (1941–2005), Indian politician, representing Lakshadweep
• P. M. Thangavelraj, Indian politician, former Member of the Legislative Assembly of Tamil Nadu

Computing and Internet

• Pac-Man, character, video game, and TV series
• Paper Mario, game for Nintendo 64
• Particle Mesh, an algorithm for calculating the potential of a system (used in computational physics).
• Perl module, a discrete component of software for the Perl programming language. (file extension .pm)
• Perl mongers - groups of local Perl enthusiasts.
• Personal message or private message, a type of e-mail within community sites or chat between two people.

Business

• P.M. Place Stores, a former US chain of discount stores
• Philip Morris USA, abbreviated as PM USA, American company
• Pobjoy Mint, a European mint, via its mint mark PM
• IATA airline designator for Tropic Air
• Program management
• Product management

Media

• 3pm, a former New Zealand children's TV programme
• PM (ABC Radio), an Australian radio news programme
• PM (Radio 4), a British radio news programme
• PM (newspaper), a 1940s U.S. newspaper
• PM Magazine, an American TV news programme (1976–1991)

Transport

• Martin PM, a version of the Naval Aircraft Factory PN flying boat
• Paris Métro
• Pere Marquette Railway
• Toyota PM, a concept car

Weapons

• PM-38, Soviet light mortar
• PM-43, Finnish anti-personnel mine
• PM-63 RAK, Polish submachine gun
• PM-60, East German anti-tank mine
• PM-68, Finnish anti-personnel mine
• PM-79, Bulgarian anti-personnel mine
• PM-84 Glauberyt, Polish submachine gun
• PM md 96, Romanian submachine gun
• Makarov PM (Pistolet Makarova), a 1940s, Soviet pistol
• Minebea PM-9, Japanese submachine gun

Music

• 2PM, a seven-member boy band from South Korea
• 4 P.M., an American male R&B group
• Palm mute, a playing technique for the guitar or bass guitar
• Penn Masala, a Hindi a cappella group from the University of Pennsylvania, USA
• P.M. Dawn, American hip-hop act
• Power Metal, a sub-genre of heavy metal music.

Other

• PM-1, American nuclear reactor.
• Prime minister, the most senior minister of a cabinet
• Preventive maintenance, a job for fault prevention during machine executes before occurring some problems.
• Pontifex Maximus, the high priest of the Ancient Roman College of Pontiffs
• Postmaster, the head of an individual post office
• Palace Museum, a large art museum housed in the Forbidden City in Beijing
• Polar Medal, a medal awarded by the Sovereign of the United Kingdom
• Saint Pierre and Miquelon: ISO 3166-1 alpha-2 country code
  • .pm, the country code top level domain (ccTLD) for Saint Pierre and Miquelon
• Performance management: activities to ensure that goals are consistently being met in an effective and efficient manner.

See also

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

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