TST

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The acronym TST can refer to:

Science and technology

• Ternary search tree, a computer science term for a data structure used in search problems
• Toeplitz Symmetric Tridiagonal, a specific type of matrix
• Total solar transmittance, the percentage of incident Solar radiation transmitted by an object
• Transition state theory, a theory that explains the reaction rates of elementary chemical reactions
• TST (gene), a gene that encodes the enzyme thiosulfate sulfurtransferase
• Tuberculin skin test, a diagnostic tool for tuberculosis
• Tectonic strain theory, a theory that correlates the appearance of EM radiation from geophysical phenomena with apparent claims of UFO sightings
• Total station theodolite, a survey instrument
• Typed set theory, a form of set theory where the sets have types.

Places

• Tsim Sha Tsui, an urbanized area in Hong Kong
  • Tsim Sha Tsui Station, a railway station there
• Trang Airport, Thailand's IATA airport code

Organisations and groups

• Telesta Therapeutics, as the company's trading symbol on the Toronto Stock Exchange
• Toronto School of Theology, Canada
• Tribunal Superior do Trabalho (Superior Labor Court), one of the Brazil federal courts
• The Satanic Temple, an American political activist organization
• TheStreet.com, as the company's NASDAQ trading symbol

Other

• Tiesto, a Dutch musician, DJ, and record producer.
• The Scorch Trials, a sequel to The Maze Runner by James Dashner.