SL may refer to:

Arts and entertainment

SL (rapper) Harlee Bashir Laguda Milne (born 3 September 2001), known professionally as SL, is a British rapper. Early life Harlee Bashir Laguda Milne was born on 3 September 2001 in Peckham, London, England. He was later raised in Thornton Heath, London d ...

, a rapper from London * ''

Second Life ''Second Life'' is a multiplayer virtual world that allows people to create an Avatar (computing), avatar for themselves and then interact with other users and user-created content within a multi-user online environment. Developed for person ...

'', a multi-user 3D virtual world * Sensei's Library, an Internet site dedicated to the game of Go *

Subdominant leittonwechselklänge Parallel and counter parallel chords are terms derived from the German (''Parallelklang'', ''Gegenparallelklang'') to denote what is more often called in English the "relative", and possibly the "counter relative" chords. In Riemannian th ...

* Leica SL, a mirrorless system camera by Leica Camera AG

Business and organizations

* Sociedad Limitada, the Spanish version of a private limited company

Politics

* Serbian Left (''Srpska levica''), a political party in Serbia *

Stronnictwo Ludowe The People's Party (''Stronnictwo Ludowe'', SL) was a Polish political party, active from 1931 in the Second Polish Republic. An agrarian populist party, its power base was mostly farmers and rural population. In 1931, it was created from the mer ...

, a defunct Polish political party * Soyons Libres, a French political party

Transportation and vehicles

* SL Corporation, a Korean auto parts company * Rio Sul Serviços Aéreos Regionais (IATA code SL), a Brazilian airline * Salt Lake City Southern Railroad (reporting mark SL) *

Stor-Oslo Lokaltrafikk Stor-Oslo Lokaltrafikk AS or SL was the public transport administration for bus and ferry transport in Akershus, Norway from 1973 to 2007. SL was organised as a aksjeselskap, limited company owned by the Akershus county municipality, the Oslo, Ci ...

, a public transport operator in Akershus, Norway *

Storstockholms Lokaltrafik Storstockholms Lokaltrafik known as SL, () is the public transport organisation responsible for managing land-based public transport in Stockholm County, Sweden. SL oversees a network that includes the Stockholm Metro, ''Tunnelbana'' metro, Stock ...

, the public transport operator in Stockholm, Sweden * Thai Lion Air (IATA airline code SL) *

Mercedes-Benz SL-Class The Mercedes-Benz SL-Class (marketed as Mercedes-AMG SL-Class (R232), Mercedes-AMG SL since 2022) is a grand touring sports car manufactured by Mercedes-Benz since 1954. The designation "''SL"'' derives from the German language, German term "''Sp ...

, an automobile

Trade unions

* Association of Social Educators, a trade union in Denmark

Geography

Sierra Leone Sierra Leone, officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered to the southeast by Liberia and by Guinea to the north. Sierra Leone's land area is . It has a tropical climate and envi ...

, in West Africa, ISO 3166 code *

Saarland Saarland (, ; ) is a state of Germany in the southwest of the country. With an area of and population of 990,509 in 2018, it is the smallest German state in area apart from the city-states of Berlin, Bremen, and Hamburg, and the smallest in ...

, a state of Germany * SL postcode area of the United Kingdom * Sungai Long, in Selangor, Malaysia *

Sri Lanka Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, ...

, an island country in South Asia

Language

Sl (digraph) This is a list of digraphs used in various Latin alphabets. In the list, letters with diacritics are arranged in alphabetical order according to their base, e.g. is alphabetised with , not at the end of the alphabet, as it would be in Danish, ...

, a Latin-script digraph *

Sign language Sign languages (also known as signed languages) are languages that use the visual-manual modality to convey meaning, instead of spoken words. Sign languages are expressed through manual articulation in combination with #Non-manual elements, no ...

, used by deaf persons *

Slovene language Slovene ( or ) or Slovenian ( ; ) is a South Slavic languages, South Slavic language of the Balto-Slavic languages, Balto-Slavic branch of the Indo-European languages, Indo-European language family. Most of its 2.5 million speakers are the ...

(ISO 639-1 code "sl") * Sl, a letter in the Proto-Canaanite abjad

Science, technology, and mathematics

Biology

* ''

Sensu lato ''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular co ...

'', a term used in taxonomy to mean "in the wider sense" of a definition *

Standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is ...

, a common measurement for fish * Abbreviation for × ''Sophrolaelia'', an orchid genus

Computing

* sl, a humorous command in some

Unix Unix (, ; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, a ...

-based systems that draws an animation of a steam locomotive, intended to be invoked as a typo of ls * .sl, the country code top-level domain for Sierra Leone *

SL (complexity) In computational complexity theory, SL (Symmetric Logspace or Sym-L) is the complexity class of problems log-space reducible to USTCON (''undirected s-t connectivity''), which is the problem of determining whether there exists a path between two ve ...

, a class of computational complexity *

Scientific Linux Scientific Linux (SL) is a discontinued Linux distribution produced by Fermilab, CERN, DESY and by ETH Zurich. It is a Free and open-source software, free and open-source operating system based on Red Hat Enterprise Linux. This product is derive ...

, a Linux distribution * Service Loading, a variant of WAP push method

Mathematics

, a class of computational complexity * sl (elliptic function), sine lemniscate function *

Special linear group In mathematics, the special linear group \operatorname(n,R) of degree n over a commutative ring R is the set of n\times n Matrix (mathematics), matrices with determinant 1, with the group operations of ordinary matrix multiplication and matrix ...

in mathematics, denoted SL_''n'' or SL(''n'') * Special linear Lie algebra, denoted

\mathfrak_n(F)

\mathfrak(n, F)

Other uses

* Serjeant-at-law, a former type of barrister in England and Ireland * '' Sine loco'' in bibliographies means that place of publication is unknown *

Southern League (New Zealand) The Southern League, known as the Dettol Southern League for sponsorship reasons, is a competition organized by the New Zealand Football, run by the Mainland Football and the Southern Football, for association football clubs located in the So ...

, association football league in New Zealand *

Sublingual administration Sublingual (abbreviated SL), from the Latin for "under the tongue", refers to the pharmacological route of administration by which substances diffuse into the blood through tissues under the tongue. Many drugs are absorbed through sublingual a ...

of medicine * Surround Left (SL) speaker on a 5.1 surround sound setup