ST, St, or St. may refer to:

Arts and entertainment

* Stanza, in poetry *

Suicidal Tendencies Suicidal Tendencies is an American crossover thrash band formed in 1980 in Venice in Los Angeles, California by vocalist Mike Muir. Muir is the only remaining original member of the band. Along with D.R.I., Corrosion of Conformity, and Stor ...

, an American heavy metal/hardcore punk band * Star Trek, a science-fiction media franchise *

Summa Theologica The ''Summa Theologiae'' or ''Summa Theologica'' (), often referred to simply as the ''Summa'', is the best-known work of Thomas Aquinas (1225–1274), a scholastic theologian and Doctor of the Church. It is a compendium of all of the main th ...

, a compendium of Catholic philosophy and theology by St. Thomas Aquinas * St or St., abbreviation of "State", especially in the name of a college or university

Businesses and organizations

Transportation

Germania (airline) Germania Fluggesellschaft mbH, trading as Germania (), wasflgermania.com
retrieved 5 February 2019

(IATA airline designator ST) * Maharashtra State Road Transport Corporation, abbreviated as State Transport *

Sound Transit Sound Transit (ST), officially the Central Puget Sound Regional Transit Authority, is a public transit agency serving the Seattle metropolitan area in the U.S. state of Washington. It operates the Link light rail system in Seattle and Tacoma, ...

, Central Puget Sound Regional Transit Authority, Washington state, US *

Springfield Terminal Railway (Vermont) Pan Am Railways, Inc. (PAR) is a subsidiary of CSX Corporation that operates Class II regional railroads covering northern New England from Mattawamkeag, Maine, to Rotterdam Junction, New York. Pan Am Railways is primarily made up of former Cla ...

(railroad reporting mark ST) * Suffolk County Transit, or Suffolk Transit, the bus system serving Suffolk County, New York

Other businesses and organizations

* Statstjänstemannaförbundet, or Swedish Union of Civil Servants, a trade union * The Secret Team, an alleged covert alliance between the CIA and American industry * STMicroelectronics, a worldwide manufacturer of semiconductors

Geography

* São Tomé and Príncipe (ISO 3166-1 country code ST) **

.st .st is the Internet country code top-level domain (ccTLD) for São Tomé and Príncipe. The code is marketed worldwide as an abbreviation for various entities. Second-level domains Registrations are taken directly at the second level, but som ...

, Internet country code top-level domain for São Tomé and Príncipe *

Saxony-Anhalt Saxony-Anhalt (german: Sachsen-Anhalt ; nds, Sassen-Anholt) is a state of Germany, bordering the states of Brandenburg, Saxony, Thuringia and Lower Saxony. It covers an area of and has a population of 2.18 million inhabitants, making it th ...

, a state of Germany *

Split, Croatia )'' , settlement_type = City , anthem = ''Marjane, Marjane'' , image_skyline = , imagesize = 267px , image_caption = Top: Nighttime view of Split from Mosor; 2nd row: Cathedra ...

(vehicle plate code ST) * Stoke-on-Trent postcode area, United Kingdom * St or St., abbreviation of Saint * St or St., abbreviation of Street * St or St., abbreviation of Strait

Language and typography

Sesotho language Sotho () or Sesotho () or Southern Sotho is a Southern Bantu language of the Sotho–Tswana ("S.30") group, spoken primarily by the Basotho in Lesotho, where it is the national and official language; South Africa (particularly the Free ...

(ISO 639-1 language code "st") * ﬅ, or st, a typographic ligature * Standard Theory in

generative grammar Generative grammar, or generativism , is a linguistic theory that regards linguistics as the study of a hypothesised innate grammatical structure. It is a biological or biologistic modification of earlier structuralist theories of linguisti ...

Science and technology

Computing

* ST connector, a type of optical fiber connector * Atari ST, a personal computer * Prefix of hard disk drives made by Seagate Technology, e.g. ST-506 *

Internet Stream Protocol The Internet Stream Protocol (ST) is a family of experimental protocols first defined in Internet Experiment Note IEN-119 in 1979, and later substantially revised in RFC 1190 (ST-II) and RFC 1819 (ST2+). The protocol uses the version number 5 in ...

, an experimental Internet protocol * Structured text, a high-level programming language that syntactically resembles Pascal and is designed for programmable logic controllers (PLC) *

, the Internet country code top-level domain (ccTLD) for São Tomé and Príncipe * St (terminal emulator), minimalist terminal emulator by suckless.org

Mathematics

* Standard part function, a term used in non-standard analysis

Physics

* Stanton number St, used in physics * Strouhal number St, used in fluid mechanics * String theory

Units of measurement

Stokes (unit) The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. Viscosity quantifies the inte ...

(St), a CGS unit of kinematic viscosity *

Stone (weight) The stone or stone weight (abbreviation: st.) is an English and imperial unit of mass equal to 14 pounds (6.35 kg). The stone continues in customary use in the United Kingdom for body weight. England and other Germanic-speaking coun ...

(st.), a unit of mass used in the British Isles and other countries

Medicine

ST segment In electrocardiography, the ST segment connects the QRS complex and the T wave and has a duration of 0.005 to 0.150 sec (5 to 150 ms). It starts at the J point (junction between the QRS complex and ST segment) and ends at the beginning of the ...

, the part of an electrocardiogram connecting the QRS complex and the T wave *

Sulfotransferase Sulfotransferases (SULTs) are transferase enzymes that catalyze the transfer of a sulfo group from a donor molecule to an acceptor alcohol or amine. The most common sulfo group donor is 3'-phosphoadenosine-5'-phosphosulfate (PAPS). In the case o ...

, enzymes that catalyze the transfer of a sulfo group * Heat-stable enterotoxin, secretory peptides produced by some bacterial strains, such as enterotoxigenic ''Escherichia coli''

Other uses

* -st, a suffix for an ordinal number, such as 1 or 21 * Saint (St or St.), especially in Christianity * Scheduled Tribes, in India * Ship prefix for a steam tug * Sine tempore (s.t.), Latin term indicating that a lecture will begin at the exact time; see

Academic quarter (class timing) An academic quarter (localized into various languages in the countries where it is practised) is the quarter-hour (15 minute) discrepancy between the defined start time for a lecture or lesson ("per schema") and the actual starting time, at some u ...

* Striker (association football), a position in association football * ST, a type of

London bus Buses have been used as a mode of public transport in London since 1829, when George Shillibeer started operating a horse-drawn ''omnibus'' service from Paddington to the City of London. In the decades since their introduction, the red London b ...