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

PM or Pm or pm may also refer to:

Arts, entertainment, and media Palm mute, a guitar playing technique PM (radio program), Australia 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 Pocket Mortys, a role-playing video game Popular Mechanics, a magazine (1902-present) Project Mayhem, a fictional conspiracy in the book and film Fight Club PM, a band with drummer Carl Palmer Private message

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 Proton Mail, a Swiss end-to-end encrypted email service launched in 2014

Terminology Performance management of an organisation Portfolio manager Preventive maintenance Project manager Product manager Program manager Product marketer

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

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 Plasma membrane, also known as cell membrane Polymyositis, a disease Poor metabolizer, a term used in pharmacogenomics to refer to individuals with little to no functional metabolic activity Post-mortem Precision medicine Pyridoxamine, the amine form of vitamin B6

Chemistry and materials science Parametric Method 3 (PM3 (chemistry)), in computational chemistry Particulate matter, microscopic particles suspended in the air PM10, particulates smaller than 10 μm Powder metallurgy, a method of fabricating metals Promethium, symbol Pm, a chemical element Pm (space group), three-dimensional space group number 6

Computing Particle mesh, an algorithm for determining forces Perl module, file extension .pm

Units of measurement Petametre (Pm), a length unit (1015 m) Picometre (pm), a length unit (10−12 m) 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

Weapons Guns and mortars Makarov PM (Pistolet Makarova), a Soviet and Russian pistol Minebea PM-9, a Japanese submachine gun 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

Precision Marksman (PM), a sniper rifle and precursor to the accuracy international arctic warfare rifle

Mines PM-43 and PM-68 mine, Finland PM-60 mine, East Germany PM-79 mine, Bulgaria

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 The plus or minus sign, a symbol used in mathematics

Other uses Passage Meditation, a form of meditation developed by Eknath Easwaran Pickleball Manitoba, Canadian provincial pickleball association Saint Pierre and Miquelon (ISO 3166-1 alpha-2 country code) .pm, top-level domain (ccTLD) for Saint Pierre and Miquelon Primitive Methodist, a Christian denomination

See also