PL, P.L., Pl, or .pl may refer to:

Businesses and organizations

Government and political

* Partit Laburista, a Maltese political party *

Liberal Party (Brazil, 2006) The Liberal Party ( pt, Partido Liberal, PL) is a conservative and national liberal political party in Brazil. From its foundation in 2006 until 2019, it was called the Party of the Republic ( pt, Partido da República, PR). The party was foun ...

, a Brazilian political party * Liberal Party (Moldova), a Moldovan political party * Liberal Party (Rwanda), a Rwandan political party *

Parlamentarische Linke The Parlamentarische Linke ( en, Parliamentary Left, abbreviated ''PL'') is a platform within the Social Democratic Party of Germany (SPD)'s Bundestag group. As of 2022, 96 of the group's 206 members belong to the Parliamentary Left, making it th ...

, a parliamentary caucus in Germany * Patriotic League (Bosnia and Herzegovina) (Bosnian: ''Patriotska Liga''), a military organisation of the Republic of Bosnia and Herzegovina * Philippine Legislature, a legislature that existed in the Philippines from 1907 to 1935 *

Progressive Labor Party (United States) The Progressive Labor Party (PLP) is an anti-revisionist Marxist–Leninist communist party in the United States. It was established in January 1962 as the Progressive Labor Movement following a split in the Communist Party USA, adopting its ne ...

, a United States communist party

Sports leagues

Premier League The Premier League (legal name: The Football Association Premier League Limited) is the highest level of the men's English football league system. Contested by 20 clubs, it operates on a system of promotion and relegation with the English Fo ...

, the top English association football league *

Pacific League The or is one of the two professional baseball leagues constituting Nippon Professional Baseball in Japan. The winner of the league championship competes against the winner in the Central League for the annual Japan Series. It currently consi ...

, one of the two leagues in Japan's Nippon Professional Baseball * Pioneer Baseball League, a Rookie league in Minor League Baseball *

Pioneer Football League The Pioneer Football League (PFL) is a collegiate athletic conference which operates in the United States. The conference participates in the NCAA's Division I Football Championship Subdivision (FCS) as a football-only conference. It has member ...

, NCAA FCS conference

Other businesses and organizations

Airstars Airways Airstars, Ltd (russian: ООО «Авиакомпания «Аэростарз») was a cargo airline based in Moscow, Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern A ...

(IATA airline designator PL, 2000–2011) *

Aeroperú Empresa de Transporte Aéreo del Perú S.A., branded as Aeroperú, was a Peruvian airline, serving as flag carrier of Peru from 1973 to 1999. The company was headquartered in Lima, with the city's Jorge Chávez International Airport serving as ...

(IATA airline designator PL, 1973–1999) * Papillion-La Vista Senior High School in Papillion, Nebraska, USA *

Public library A public library is a library that is accessible by the general public and is usually funded from public sources, such as taxes. It is operated by librarians and library paraprofessionals, who are also civil servants. There are five fundamen ...

, a library maintained by government for public use * Professional Limited Liability Company, a limited liability company organized for the purpose of providing professional services

Places

* PL postcode area, UK, a group of postcode districts in England *

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populou ...

(ISO 3166-1 country code)

Religion

PL Kyodan , is a Japanese Shinshūkyō (new religious movement) founded in 1924 by Tokuharu Miki (1871–1938), who was a priest in the Ōbaku sect of Zen Buddhism. The stated aim of the Church of Perfect Liberty is to bring about world peace. Teachings ...

, a religious movement founded in Japan in the early 20th century * ''

Patrologia Latina The ''Patrologia Latina'' (Latin for ''The Latin Patrology'') is an enormous collection of the writings of the Church Fathers and other ecclesiastical writers published by Jacques-Paul Migne between 1841 and 1855, with indices published between ...

'', a collection of Catholic writings published by Jacques-Paul Migne between 1841 and 1855

Science, technology, and mathematics

Chemistry

* Pyridoxal, one form of vitamin B6 * Pulchellidin (Pl), an anthocyanidin *

Phospholipid Phospholipids, are a class of lipids whose molecule has a hydrophilic "head" containing a phosphate group and two hydrophobic "tails" derived from fatty acids, joined by an alcohol residue (usually a glycerol molecule). Marine phospholipids typ ...

, a class of lipids that are a major component of all cell membranes

Computing and telecommunications

File formats

* .pl, common filename suffix for

Perl Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages. "Perl" refers to Perl 5, but from 2000 to 2019 it also referred to its redesigned "sister language", Perl 6, before the latter's name was offic ...

scripts * .pl, common filename suffix for Prolog programs * .pl, common filename suffix for TeX font property lists

Programming

Programming language A programming language is a system of notation for writing computer programs. Most programming languages are text-based formal languages, but they may also be graphical. They are a kind of computer language. The description of a programming ...

PL/C PL/C is an instructional dialect of the programming language PL/I, developed at the Department of Computer Science of Cornell University in the early 1970s in an effort headed by Professor Richard W. Conway and graduate student Thomas R. Wilcox. ...

, an instructional dialect of the PL/I computer programming language, developed at Cornell University in the 1970s **

PL/I PL/I (Programming Language One, pronounced and sometimes written PL/1) is a procedural, imperative computer programming language developed and published by IBM. It is designed for scientific, engineering, business and system programming. I ...

, a computer programming language developed in the 1960s ** PL/SQL, Oracle's procedural language extension (inception in 1995) ** PL/pgSQL, PostgreSQL's procedural language extension (inception 1998)

Telecommunication and networking

.pl 


 is the Internet country code top-level domain (ccTLD) for Poland, administered by  NASK, the Polish research and development organization. It is one of the founding members of  CENTR.
  History 
The  domain was created in 1990, following the mit ...

, country code top-level domain for Poland *

PL tone In telecommunications, Continuous Tone-Coded Squelch System or CTCSS is one type of in-band signaling that is used to reduce the annoyance of listening to other users on a shared two-way radio communication channel. (See squelch.) It is sometime ...

, a kind of squelching of an audio signal *

Packet loss Packet loss occurs when one or more packets of data travelling across a computer network fail to reach their destination. Packet loss is either caused by errors in data transmission, typically across wireless networks, or network congestion.Ku ...

, one of the three main error types encountered in digital communications * Path loss, in telecommunication engineering * Presentation layer, one of the seven layers in the OSI model of computer networking * Digital Private Line, another form of tone squelching

Mathematics

* Piecewise linear (disambiguation), in mathematics *

Propositional logic Propositional calculus is a branch of logic. It is also called propositional logic, statement logic, sentential calculus, sentential logic, or sometimes zeroth-order logic. It deals with propositions (which can be true or false) and relations b ...

, a system of evaluating truth-based propositions in terms of binary logic * PL (complexity), in complexity theory

Other uses in science and technology

Ice pellets Ice pellets are a form of precipitation consisting of small, hard, translucent balls of ice. Ice pellets are different from graupel ("soft hail") which is made of frosty white opaque rime, and from a mixture of rain and snow which is a slushy ...

(METAR weather code PL), a form of precipitation * Picolitre (pL), and petaliter (PL), units of volume *

Pluto Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of trans-Neptunian object, bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the S ...

, a dwarf planet *

Photoluminescence Photoluminescence (abbreviated as PL) is light emission from any form of matter after the absorption of photons (electromagnetic radiation). It is one of many forms of luminescence (light emission) and is initiated by photoexcitation (i.e. photo ...

, the re-emission of photons from a surface following exposure *

Pierre Levasseur (aircraft builder) Pierre Georges Albert Levasseur (July 16, 1890 in Paris – August 2, 1941 in Paris) was a French aircraft and component maker. He set up his company ''Société Pierre Levasseur Aéronautique'', always referred to simply as Levasseur in Paris in 19 ...

, a French aircraft designer *

Plastic limit The Atterberg limits are a basic measure of the critical water contents of a fine-grained soil: its shrinkage limit, plastic limit, and liquid limit. Depending on its water content, soil may appear in one of four states: solid, semi-solid, plastic ...

, in geotechnical engineering

Other uses

Platoon leader {{unreferenced, date=February 2013 A platoon leader (NATO) or platoon commander (more common in Commonwealth militaries and the US Marine Corps) is the officer in charge of a platoon. This person is usually a junior officer – a second or first ...

, in the US Army *

Plural The plural (sometimes list of glossing abbreviations, abbreviated pl., pl, or ), in many languages, is one of the values of the grammatical number, grammatical category of number. The plural of a noun typically denotes a quantity greater than the ...

, in grammar *

Polish language Polish (Polish: ''język polski'', , ''polszczyzna'' or simply ''polski'', ) is a West Slavic language of the Lechitic group written in the Latin script. It is spoken primarily in Poland and serves as the native language of the Poles. In ad ...

(ISO 639-1 code "pl") * Private label, an arrangement between companies regarding the exclusive sale of goods *

Public law Public law is the part of law that governs relations between legal persons and a government, between different institutions within a state, between different branches of governments, as well as relationships between persons that are of direct ...

* Public liability {{disambiguation