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), a Brazilian political party *

Liberal Party (Moldova) Liberal Party ( ro, Partidul Liberal, PL) is a conservative-liberal political party in Moldova. The president of the party is the former Mayor of Chișinău, Dorin Chirtoacă. History The party was established under the name Party of Reform ( ...

, a Moldovan political party * Liberal Party (Rwanda), a Rwandan political party * Parlamentarische Linke, 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), 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 Foo ...

, the top English association football league * Pacific League, one of the two leagues in Japan's Nippon Professional Baseball * Pioneer Baseball League, a Rookie league in Minor League Baseball * Pioneer Football League, NCAA FCS conference

Other businesses and organizations

* Airstars Airways (IATA airline designator PL, 2000–2011) * Aeroperú (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 service, civil servants. There are ...

, 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. Poland is divided into Voivodeships of Poland, sixteen voivodeships and is the fifth most populous member state of the European Union (EU), with over 38 mill ...

(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 ty ...

, 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 programming language, high-level, General-purpose programming language, general-purpose, Interpreter (computing), interpreted, dynamic programming languages. "Perl" refers to Perl 5, but from 2000 to 2019 it ...

scripts * .pl, common filename suffix for

Prolog Prolog is a logic programming language associated with artificial intelligence and computational linguistics. Prolog has its roots in first-order logic, a formal logic, and unlike many other programming languages, Prolog is intended primarily a ...

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 l ...

** PL/C, 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. It ...

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

PL/pgSQL PL/pgSQL (Procedural Language/PostgreSQL) is a procedural programming language supported by the PostgreSQL ORDBMS. It closely resembles Oracle's PL/SQL language. Implemented by Jan Wieck, PL/pgSQL first appeared with PostgreSQL 6.4, released o ...

, 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, a kind of squelching of an audio signal * Packet loss, 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 In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a strong input signal. Essentially, squelch is a specialized type of noise gate designed to suppress weak ...

, another form of tone squelching

Mathematics

Piecewise linear (disambiguation) Piecewise linear may refer to: * Piecewise linear curve, a connected sequence of line segments * Piecewise linear function, a function whose domain can be decomposed into pieces on which the function is linear * Piecewise linear manifold, a topolog ...

, 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 ...

, 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 (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 bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest k ...

, a dwarf planet * Photoluminescence, the re-emission of photons from a surface following exposure * Pierre Levasseur (aircraft builder), a French aircraft designer * Plastic limit, in geotechnical engineering

Other uses

* Platoon leader, 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 add ...

(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 (polity), state, between Separation of powers, different branches of governments, as well as relationship ...

* Public liability {{disambiguation