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), 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), a United States communist party

Sports leagues

* Premier League, 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 Airstars, Ltd (russian: ООО «Авиакомпания «Аэростарз») was a cargo airline based in Moscow, Russia. It was established in 2000 and operated cargo services throughout Russia and eastern Europe. Its main base was Domodedov ...

(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 (ISO 3166-1 country code)

Religion

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

Programming

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

, 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, 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 The litre (international spelling) or liter (American English spelling) (SI symbols L and l, other symbol used: ℓ) is a metric unit of volume. It is equal to 1 cubic decimetre (dm3), 1000 cubic centimetres (cm3) or 0.001 cubic metre (m3). ...

(pL), and petaliter (PL), units of volume * Pluto, 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. photon ...

, 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, in geotechnical engineering

Other uses

* Platoon leader, in the US Army * Plural, in grammar * Polish language (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