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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 The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. (from Latin , translating to "before midday") and p.m. (from Latin , translating to "after midday"). For different opinions on represent ...
. PM or Pm or pm may also refer to:


Arts and entertainment

*
Palm mute The palm mute is a playing technique for guitar and bass guitar, executed by placing the side of the picking hand below the little finger across the strings to be plucked, very close to the bridge, and then plucking the strings while the damp ...
, 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 PM Press is an independent publisher, founded in 2007, that specializes in radical, Marxist and anarchist literature, as well as crime fiction, graphic novels, music CDs, and political documentaries. It has offices in the San Francisco Bay Area, ...
, an American publishing company *
Project Mayhem ''Fight Club'' is a 1996 novel by Chuck Palahniuk. It follows the experiences of an unnamed protagonist struggling with insomnia. Inspired by his doctor's exasperated remark that insomnia is not suffering, the protagonist finds relief by impers ...
, a “fictional conspiracy” created in the Chuck Palahniuk 1996 novel Fight Club and 1999 movie of the same name * PM a rock band featuring british drummer Carl Palmer.


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 Philip Morris International Inc. (PMI) is an American Multinational corporation, multinational tobacco company, with products sold in over 180 countries. The most recognized and best selling product of the company is Marlboro. Philip Morris I ...
, a tobacco company


Terminology

* Performance management of an organisation *
Portfolio manager A portfolio manager (PM) is a professional responsible for making investment decisions and carrying out investment activities on behalf of vested individuals or institutions. Clients invest their money into the PM's investment policy for future grow ...
* Preventive maintenance *
Project manager A project manager is a professional in the field of project management. Project managers have the responsibility of the planning, procurement and execution of a project, in any undertaking that has a defined scope, defined start and a defined f ...
* Product manager


Government

*
Prime minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not ...
*
Polícia Militar Military Police ( pt, Polícia Militar, , also known as ''PM'', ) are the preventive state police of the states and of the Federal District of Brazil. The Military Police units are the main ostensive police force at the state level and are respo ...
, Brazilian military police *Political-Military ( 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. Pat Maloney Sr. (August 9, 1924 – September 11, 2005), also known as PM, was an American trial lawyer. Based in San Antonio, Texas, Maloney was a "firebrand plaintiffs' lawyer known as the king of torts."Carmina DaniniPat Maloney Sr., King of T ...
(1924–2005), American trial lawyer


Science, technology, and mathematics


Biology and medicine

*
Plasma membrane The cell membrane (also known as the plasma membrane (PM) or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of all cells from the outside environment (t ...
, also known as cell membrane *
Polymyositis Polymyositis (PM) is a type of chronic inflammation of the muscles (inflammatory myopathy) related to dermatomyositis and inclusion body myositis. Its name means "inflammation of many muscles" ('' poly-'' + '' myos-'' + ''-itis''). The inflammati ...
, a disease * Poor metabolizer, a term used in pharmacogenomics to refer to individuals with little to no functional metabolic activity *
Post-mortem An autopsy (post-mortem examination, obduction, necropsy, or autopsia cadaverum) is a surgical procedure that consists of a thorough examination of a corpse by dissection to determine the cause, mode, and manner of death or to evaluate any dis ...
* Precision medicine


Chemistry and materials science

*Parametric Method 3 ( PM3 (chemistry)), in computational chemistry *
Particulate matter Particulates – also known as atmospheric aerosol particles, atmospheric particulate matter, particulate matter (PM) or suspended particulate matter (SPM) – are microscopic particles of solid or liquid matter suspended in the air. The ter ...
, microscopic particles suspended in the air **
PM10 Particulates – also known as atmospheric aerosol particles, atmospheric particulate matter, particulate matter (PM) or suspended particulate matter (SPM) – are microscopic particles of solid or liquid matter suspended in the air. The te ...
, particulates smaller than 10 μm * Powder metallurgy, a method of fabricating metals *
Promethium Promethium is a chemical element with the symbol Pm and atomic number 61. All of its isotopes are radioactive; it is extremely rare, with only about 500–600 grams naturally occurring in Earth's crust at any given time. Promethium is one of onl ...
, symbol Pm, a chemical element


Computing

*
Particle mesh Particle Mesh (PM) is a computational method for determining the forces in a system of particles. These particles could be atoms, stars, or fluid components and so the method is applicable to many fields, including molecular dynamics and astrophysi ...
, an algorithm for determining forces *
Perl module A Perl module is a discrete component of software for the Perl programming language. Technically, it is a particular set of conventions for using Perl's package mechanism that has become universally adopted. A module defines its source code to ...
, file extension .pm * Private message, a private communication channel on a some platforms


Video games

*'' Paper Mario'', a 2001 video game *The '' Paper Mario'' series


Units of measurement

*
Petameter The following are examples of orders of magnitude for different lengths. __TOC__ Overview Detailed list To help compare different orders of magnitude, the following list describes various lengths between 1.6 \times 10^ metres and 10^ ...
, a length unit (1015 m) (Pm) *
Picometre The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the International System of Units (SI), equal to , or one trillionth of ...
, 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 is a Japanese multinational automotive manufacturer headquartered in Toyota City, Aichi, Japan. It was founded by Kiichiro Toyoda and incorporated on . Toyota is one of the largest automobile manufacturers in the world, producing about 10 ...
, a concept car * Pm36, a Polish steam locomotive * PM3, a Blue Origin propulsion module for a suborbital rocket


Weapons


Guns and mortars

* Makarov PM (Pistolet Makarova), a Soviet and Russian pistol *
Minebea PM-9 The Minebea PM-9 Submachine Gun, known officially in the Japan Self-Defense Forces (JSDF) as the or as the M9, is a Japanese-made machine pistol. Analogous to the Israeli Uzi#Military variants, IMI Mini-Uzi, it has the same telescoping bolt as t ...
, a Japanese submachine gun *
PM-38 The RM-38 was a Soviet Union, Soviet 50 mm light infantry Mortar (weapon), mortar. The barrel was clamped at two elevation angles only - 45 and 75 degrees. Range variations were made by altering a sleeve round the base of the barrel. This sle ...
, a Soviet light mortar * PM-63 RAK, Polish submachine gun *
PM-84 Glauberyt The PM-84 Glauberyt is a Polish submachine gun. It is a personal weapon intended for combat and self-defence at ranges up to 150 m with single shot or fully automatic fire mode. It features a compact design, minimum overall dimensions, small ...
, Polish submachine gun *
PM md 96 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'' (Australia ...
, 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 The PM-43 (Putkimiina m/43) and PM-68 (Putkimiina m/68) are Finnish anti-personnel fragmentation mines. The PM-43 has a long cylindrical steel body, with heavy fragmentation grooves. It has been used with variety of fuzes including the Model 43, ...
, Finnish anti-personnel mines *
PM-60 mine The PM-60 or K-1 is a German round plastic cased minimum metal anti-tank blast mine. The case of the mine consists of two halves joined by sixteen plastic nuts, giving the mine a distinctive appearance. The top of the mine has a large pressure plat ...
, an East German anti-tank mine *
PM-79 mine The PM-79 is a small, circular Bulgarian blast-resistant anti-personnel mine, superficially similar to the Russian PMN. The mine uses a unique trigger design; on the top of the mine, beneath a thin rubber cover is a dish shaped pressure plate. Pr ...
, 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 In fiber optics, polarization-maintaining optical fiber (PMF or PM fiber) is a single-mode optical fiber in which linearly polarized light, if properly launched into the fiber, maintains a linear polarization during propagation, exiting the ...
or PM fiber *'' Principia Mathematica'', by Whitehead and Russell *The plus or minus sign, a symbol used in mathematics


Other uses

*
Passage Meditation ''Passage Meditation'' is a book by Eknath Easwaran, originally published in 1978 with the title ''Meditation''. The book describes a meditation program, also now commonly referred to as Passage Meditation. Easwaran developed this method of meditati ...
, a form of meditation developed by Eknath Easwaran * Saint Pierre and Miquelon (ISO 3166-1 alpha-2 country code) **
.pm .pm is the country code top-level domain (ccTLD) for Saint Pierre and Miquelon. It is managed by AFNIC, with registration services opening on 6 December 2011. As of June 2021, there are more than 7000 registered .pm domains. British Domain H ...
, top-level domain (ccTLD) for Saint Pierre and Miquelon


See also

* * * {{disambiguation