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. Li ...

, 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. ...

, 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 dia ...

* Tectonic strain theory, in geology *

Total sleep time Sleep is a state of reduced mental and physical activity in which consciousness is altered and certain sensory activity is inhibited. During sleep, there is a marked decrease in muscle activity and interactions with the surrounding environme ...

Total station theodolite A total station or total station theodolite is an electronic/optical instrument used for surveying and building construction. It is an electronic transit theodolite integrated with electronic distance measurement (EDM) to measure both vertical ...

, instrument used for surveying and building construction * Typed set theory, in mathematical logic * Transgressive systems tract, in

sequence stratigraphy In mathematics, a sequence is an enumerated collection of mathematical object, objects in which repetitions are allowed and order theory, order matters. Like a Set (mathematics), set, it contains Element (mathematics), members (also called ''ele ...

(geology) *

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 immobi ...

, stress test for rats * Team selection test

Places

Tsim Sha Tsui Tsim Sha Tsui ( zh, c=尖沙咀), often abbreviated as TST, is an list of areas of Hong Kong, 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 ...

, 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 International Airport is in Tambon Khok Lo, Amphoe Mueang Trang, Trang province in Southern Thailand Southern Thailand (formerly Southern Siam and Tambralinga) is the southernmost cultural region of Thailand, separated from Central ...

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 Th ...

, 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 ...

, NASDAQ trading symbol *

Toronto School of Theology Affiliated with the University of Toronto, the Toronto School of Theology (TST) is an Ecumenism, ecumenical consortium of seven Seminary, theological colleges. Its seven member schools are Emmanuel College, Toronto, Emmanuel College, Knox College, ...

, 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 provi ...

, 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 (TST) is a non-theistic new religious movement, founded in 2013 and headquartered in Salem, Massachusetts, United States. Established in response to the "intrusion of Christian values on American politics", congregations hav ...

, nontheistic religious and human rights organization

Other

* .TST, ExamView file extension * Tolley, Scott & Tolley, Australian winemakers *

Top Secret Classified information is confidential material that a government deems to be sensitive information which must be protected from unauthorized disclosure that requires special handling and dissemination controls. Access is restricted by law or ...

(''TST''), a South Korean band *

The Soccer Tournament The Soccer Tournament (TST) is a seven-a-side association football tournament played in the United States, established by TBT Enterprises, creator of The Basketball Tournament (TBT). TST was announced on October 11, 2022 to feature 32 teams with ...

, a sports tournament *

Taiwan Standard Time National Standard Time is the official time zone in Taiwan defined by an UTC offset of +08:00. This standard is also known as Taipei Time (), Taiwan Time () or Taiwan Standard Time (TST). History The first time zone standard in Taiwan was en ...

, the standard time zone used in Taiwan (UTC+8). {{disambiguation, geo