// Workers AI · dad joke modeWhat did PM say to AM? "You're a little behind.

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

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