TST may stand for:

Science and technology

Ternary search tree In computer science, a ternary search tree is a type of trie (sometimes called a ''prefix tree'') where nodes are arranged in a manner similar to a binary search tree, but with up to three children rather than the binary tree's limit of two. Lik ...

, in computer science *

Transition state theory In chemistry, transition state theory (TST) explains the reaction rates of elementary chemical reactions. The theory assumes a special type of chemical equilibrium (quasi-equilibrium) between reactants and activated transition state complexes. T ...

, of chemical reaction rates *

TST (gene) Thiosulfate sulfurtransferase is an enzyme that in humans is encoded by the ''TST'' gene. The product of this gene is a mitochondrial matrix enzyme that is encoded by the nucleus. It may play roles in cyanide detoxification, the formation of iro ...

Tuberculin skin test The Mantoux test or Mendel–Mantoux test (also known as the Mantoux screening test, tuberculin sensitivity test, Pirquet test, or PPD test for purified protein derivative) is a tool for screening for tuberculosis (TB) and for tuberculosis diagn ...

* Tectonic strain theory *

Total sleep time Sleep is a sedentary state of mind and body. It is characterized by altered consciousness, relatively inhibited Perception, sensory activity, reduced muscle activity and reduced interactions with surroundings. It is distinguished from wakefuln ...

* Total station theodolite * Typed set theory, in mathematical logic *Transgressive systems tract, in

sequence stratigraphy Sequence stratigraphy is a branch of geology, specifically a branch of stratigraphy, that attempts to discern and understand historic geology through time by subdividing and linking sedimentary deposits into unconformity bounded units on a variety ...

Tail suspension test The tail suspension test (TST) is an experimental method used in scientific research to measure stress in rodents. It is based on the observation that if a mouse is subjected to short term inescapable stress then the mouse will become immobile ...

Places

Tsim Sha Tsui Tsim Sha Tsui, often abbreviated as TST, is an list of areas of Hong Kong, urban area in southern Kowloon, Hong Kong. The area is administratively part of the Yau Tsim Mong District. Tsim Sha Tsui East is a piece of land reclaimed from the Hu ...

, an urbanized area in Hong Kong **

Tsim Sha Tsui station Tsim Sha Tsui is an MTR station on the . The station, originally opened on 16 December 1979 on the , serves the area of Tsim Sha Tsui. East Tsim Sha Tsui station on the , which opened on 24 October 2004, is connected to this station by underg ...

, a railway station there *

Trang Airport Trang Airport ( th, ท่าอากาศยานตรัง) is in Tambon Khok Lo, Mueang Trang District, Trang Province, seven km from Trang town centre. Major expansion Despite being solely domestic, passenger numbers have been ...

in Thailand (IATA airport code)

Organisations and groups

Telesta Therapeutics Telesta Therapeutics Inc. was a publicly traded, Canadian pharmaceutical company based in Montreal, Quebec. It was acquired by ProMetic Life Sciences in 2016. CEO Michael Berendt; prior to joining Telesta, was the president and CEO of Aegera T ...

, Toronto Stock Exchange symbol *

TheStreet.com ''TheStreet'' is a financial news and financial literacy website. It is a subsidiary of The Arena Group. The company provides both free content and subscription services such as Action Alerts Plus a stock recommendation portfolio co-managed by B ...

, NASDAQ trading symbol * Toronto School of Theology, Canada *

TST-CF Express TST Solutions L.P. (doing business as TST-CF Express) is a Canadian less than truckload (LTL) freight carrier located in Mississauga, Ontario, Canada. TST-CF offers nationwide Canadian service and partners with US-based LTL carrier Saia to prov ...

, Canadian LTL freight carrier formerly known as TST Overland Express * Tribunal Superior do Trabalho, ''(Superior Labor Court)'', Brazil federal courts *

The Satanic Temple The Satanic Temple, often abbreviated TST, is a nontheistic religious organization that is primarily based in the United States, with additional congregations in Canada, Australia, and the United Kingdom. Co-founded by Lucien Greaves, the or ...

, nontheistic religious and human rights organization

Other

* .TST, ExamView file extension *

Tolley, Scott & Tolley The Tolley family were important winemakers, merchants and distillers in South Australia. Members of the family formed three businesses: A. E. & F. Tolley, wine merchants of Leigh Street, Adelaide, Tolley Scott & Tolley, distillers of Stepney and ...

, Australian winemakers *

Top Secret Classified information is material that a government body deems to be sensitive information that must be protected. Access is restricted by law or regulation to particular groups of people with the necessary security clearance and need to know, ...

(''TST''), a South Korean band {{disambiguation, geo