Science, technology, and mathematics

Mathematics

* Set (mathematics), a collection of elements * Category of sets, the category whose objects and morphisms are sets and total functions, respectively

Electronics and computing

* Set (abstract data type), a data type in computer science that is a collection of distinct values ** Set (C++), a set implementation in the C++ Standard Library * Set (command), a command for setting values of environment variables in Unix and Microsoft operating-systems * Secure Electronic Transaction, a standard protocol for securing credit card transactions over insecure networks * Single-electron transistor, a device to amplify currents in nanoelectronics * Single-ended triode, a type of electronic amplifier * Set!, a programming syntax in the scheme programming language

Biology and psychology

* Set (psychology), a set of expectations which shapes perception or thought *Set or sett, a badger's den *Set, a small tuber or bulb used instead of seed, especially: ** Potato set ** Onion set * SET (gene), gene for a human protein involved in apoptosis, transcription and nucleosome assembly * Single Embryo Transfer, used in ''in vitro'' fertilization

Physics and chemistry

* A chemical change in an adhesive from unbonded to bonded ** Set, to make/become solid; see Solidification * Stress–energy tensor, a physical quantity in the theory of fields * Single electron transfer

Other uses in science and technology

* Saw set, the process of setting the teeth of a saw so each tooth protrudes to the side of the blade * Scalar expectancy theory, a model of the processes that govern behavior controlled by time * Science, Engineering & Technology, e.g. The Science, Engineering & Technology Student of the Year Awards * Setting (typesetting), the act of typesetting a publication for print or display * Simulated Emergency Test, an amateur radio training exercise * Software Engineer in Test, a quality assurance job title in some software companies * Strategic Energy Technologies Plan of the European Union * Suzuki SET, Suzuki Exhaust Tuning of motorcycles * Set Catena, a pit chain on Neptune's largest moon Triton

Arts and entertainment

Comics and literature

* Set (comics), the chief deity of the Stygian people in Robert E. Howard's stories of ''Conan the Barbarian'' and the later Marvel comics series

Dance

*Set, the basic square formation in square dancing *Set, the basic longwise, square or triangular formation in Scottish Country dancing *Set, the basic formation of more than one couple in Scottish, English and Irish Céilidh

Film, television and theatre

* Set (film and TV scenery) * Theatrical scenery * Set construction, construction of scenery for theatrical, movie, television production, and video game production * ''The Set'' (film), a 1970 Australian movie * ''The Set'' (TV series), an Australian music television show * Sanlih Entertainment Television, a television channel in Taiwan * Sony Entertainment Television, a Hindi-language television channel

Music

*DJ set or DJ mix, a musical performance by a DJ * Set theory (music), dealing with concepts for categorizing musical objects and describing their relationships * Set (music), a collection of discrete entities, for example pitch sets, duration sets, and timbre sets * ''Set'' (Thompson Twins album) * ''Set'' (Alex Chilton album) * Set list, a list of songs to be played during musical performances *"Set", a song from King Gizzard & the Lizard Wizard's 2023 album ''The Silver Cord''

Businesses and organizations

* Societatea Pentru Exploatări Tehnice, a Romanian aeronautics company of the 1920s to 1940s * South Eastern Trains, former train operator England * Stock Exchange of Thailand, the national stock exchange of Thailand * SET Index, an index for the Stock Exchange of Thailand * SET (arts organisation), a London-based arts organisation and charity * South Eastern Trust, Northern Irish health organization * Study of Exceptional Talent, a program for gifted students * Sydney Electric Train Society, an electric train preservation society in Sydney, Australia

Religion

* Set (deity) or Seth, an ancient Egyptian deity *Set or Seth, a Biblical character, a son of Adam and Eve

Sport and games

* Set (darts), a sequence of games * Set (card game), a pattern-finding race * Set (cards), two or more cards of the same rank ** Three of a kind (poker), a type of poker hand * Set (dominoes), the first play in dominoes *Set, a signal used in American football *The set, a pitching position in baseball *Set, a unit of play in

tennis Tennis is a List of racket sports, racket sport that is played either individually against a single opponent (singles (tennis), singles) or between two teams of two players each (doubles (tennis), doubles). Each player uses a tennis racket st ...

*Set, a team's second contact with the ball in volleyball *Set, a group of repetitions in weight training * Set (video game), a group of items that adds specific bonuses

Other uses

* Set and setting, coined by Timothy Leary to describe the mindset and location of hallucinogenic experiences * Seṭ and aniṭ roots, in Sanskrit grammar * Set (river), a river in northeastern Spain * Selective Employment Tax, a tax in the United Kingdom from 1966 to 1973 * Senate Electoral Tribunal, decides election protests for the Senate of the Philippines *A set, set meal, set menu, or table d'hôte: a meal offered at a fixed price * Set (gang), a subgroup of a gang alliance