PM

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 and entertainment

 * 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
 * Project Mayhem, a fictional conspiracy in the book and film Fight Club
 * PM, a band with drummer Carl Palmer.

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

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

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

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

Computing

 * Particle mesh, an algorithm for determining forces
 * Perl module, file extension .pm
 * Private message, a private communication channel on some platforms

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

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
 * Saint Pierre and Miquelon (ISO 3166-1 alpha-2 country code)
 * .pm, top-level domain (ccTLD) for Saint Pierre and Miquelon