SET explained

Set has 464 separate definitions in the Oxford English Dictionary, the most of any English word; its full definition comprises 10,000 words making it the longest definition in the OED.

Set may refer to:

In mathematics and science:

Set, a collection of things in mathematics
Set (computer science), a datatype that is a collection of values

In the arts:

Set construction, dramatic settings for theatrical, movie and video production
Set, the basic square formation in square dancing
Musical set theory, for tone row and diatonic set theory
DJ set, a musical performance by a DJ
Set (Thompson Twins album)

In sport and games:

Set (game), a card game
Set, a unit of play in Tennis
Set (darts), when one player wins three legs

Referring to a deity:

Set (mythology), an ancient Egyptian deity
Set (serpent god), a character in the Marvel Universe and Conan the Barbarian stories

In crime

Set, one of the various sub-groups of street gangs, which have significant differences between them such as gang signals, colors, clothing, and operations, especially of the Crips or the Bloods

Miscellaneous uses:

Set and setting, coined by Timothy Leary to describe the mindset and location of hallucinogenic experiences
, a term of Sanskrit grammar
Set (video game), a group of items that adds specific bonuses

Acronyms

SET may stand for:

Sanlih Entertainment Television, a television channel in Taiwan
Secure electronic transaction, a protocol used for credit card processing,
Similarity Enhanced Transfer, a technology used to speed up download rate of files on file sharing networks
Simulated Emergency Test, an amateur radio training exercise,
Single-Electron Transistor, a device to amplify currents in nanoelectronics,
Societatea pentru exploatari technice - a Romanian aircraft manufacturer of the 1920s and 30s
Society for the Eradication of Television,
Society of Engineering Technologists, a student organization at Texas Tech University
Sony Entertainment Television, a television channel owned by Sony,
South Eastern Trains now run by Southeastern, a public-owned rail company operating in South East England,
Stock Exchange of Thailand, a national stock exchange of Thailand,
SET Index, an index for Stock Exchange of Thailand,
Study of Exceptional Talent, a program for gifted students with high scores on the SAT in middle school,
Single-Ended Triode, a type of electronic amplifier,
Social Entropy Theory, application of entropy concept to maintenace or disorganisation in society,
School of Engineering Technology,
Selective Employment Tax, a UK tax on non-productive workers introduced in 1966 and abandoned a few years later,
Southeast Toyota Distributors, the world's largest privately owned distributor of Toyota vehicles,
Suzuki SET (Suzuki Exhaust Tuning).

SET may also refer to:

The DOS command to set environment variables.
The unix command to set variables.