TR or tr may stand for

Arts and entertainment

Gaming

Tomb Raider ''Tomb Raider'', also known as ''Lara Croft: Tomb Raider'' from 2001 to 2008, is a media franchise that originated with an action-adventure video game series created by British gaming company Core Design. Formerly owned by Eidos Interactive, ...

, one of the most successful video game franchises *

Terminal Reality Terminal Reality is an American video game development and production company based in Lewisville, Texas. Founded in October 1994 by ex-Microsoft employee Mark Randel and former Mallard Software general manager Brett Combs, Terminal Reality dev ...

, an American video game developer * A currency in online game ''

TalesRunner ''Tales Runner'' is a massively multiplayer online game created by the South Korean company Rhaon Entertainment and published by Smilegate. It combines the genres of social, fantasy and racing games; players compete by running, jumping, dashing ...

'' * The Terran Republic in the game ''

PlanetSide ''PlanetSide'' was a massively-multiplayer online first-person-shooter video game published by Sony Online Entertainment and released on May 20, 2003. ''PlanetSide'' chronicles the efforts of three factions as they fight for territorial contro ...

Music

* Korg TR, a variant of the

Korg Triton The Korg Triton is a music workstation synthesizer, featuring digital sampling and sequencing, released in 1999. It uses Korg's HI Synthesis tone generator and was eventually available in several model variants with numerous upgrade options. The ...

music workstation synthesizer *

Trill TRILL (Transparent Interconnection of Lots of Links) is an Internet Standard implemented by devices called TRILL switches. TRILL combines techniques from bridging and routing, and is the application of link-state routing to the VLAN-aware cus ...

, notation for musical ornament * TR-808,

TR-909 The Roland TR-909 Rhythm Composer is a drum machine introduced by Roland Corporation in 1983, succeeding the TR-808. It was the first Roland drum machine to use samples for some sounds, and the first with MIDI functionality, allowing it to syn ...

etc., 1980s Roland drum machines

Businesses and organizations

Scoot Scoot Pte Ltd, operating as Scoot, is a Singaporean low-cost airline and a wholly owned subsidiary of Singapore Airlines. It began its operations on 4 June 2012 on medium and long-haul routes from Singapore, predominantly to various airports t ...

, IATA code since 2017 * Tiger Airways, IATA code between 2003 and 2017 * Tomahawk Railway, reporting mark *

Transbrasil TransBrasil was a Brazilian airline which ceased operations on 3 December 2001. During most of its history, Transbrasil was owned by local entrepreneur Omar Fontana. Its aircraft usually featured a colorful livery, remarkably with a rainbow on the ...

, IATA airline code until 2001 *

Team Rubicon Team Rubicon is an international non-government organization (NGO) specializing in disaster response. History Team Rubicon was formed in January 2010 following the Haiti earthquake, when William McNulty and Jacob "Jake" Wood led a medica ...

, commonly used abbreviation *

Talyllyn Railway The Talyllyn Railway ( cy, Rheilffordd Talyllyn) is a narrow gauge preserved railway in Wales running for from Tywyn on the Mid-Wales coast to Nant Gwernol near the village of Abergynolwyn. The line was opened in 1865Drummond 2015, page 17 ...

, a Welsh railway *

Thomson Reuters Thomson Reuters Corporation ( ) is a Canadian multinational media conglomerate. The company was founded in Toronto, Ontario, Canada, where it is headquartered at the Bay Adelaide Centre. Thomson Reuters was created by the Thomson Corpora ...

, a Canadian multinational media conglomerate *

Texas Roadhouse Texas Roadhouse is an American steakhouse chain that specializes in steaks in a Texan and Southwestern cuisine style. It is a subsidiary of Texas Roadhouse Inc, which has two other concepts (Bubba's 33 and Jaggers) and is headquartered in Louis ...

, restaurant chain in the United States * Tokyu Railways. See

Tokyu Corporation The is a Japanese multinational '' keiretsu'' (conglomerate) holding company headquartered in Shibuya, Tokyo. Its main operation is , a wholly owned subsidiary operating railways in the Greater Tokyo Area. History The oldest predecessor ...

Language

* Tr, a digraph *

Turkish language Turkish ( , ), also referred to as Turkish of Turkey (''Türkiye Türkçesi''), is the most widely spoken of the Turkic languages, with around 80 to 90 million speakers. It is the national language of Turkey and Northern Cyprus. Significant sma ...

(ISO 639 alpha-1 code "tr")

People

Theodore Roosevelt Theodore Roosevelt Jr. ( ; October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, soldier, conservationist, naturalist, historian, and writer who served as the 26t ...

, the 26th president of the United States **

Presidency of Theodore Roosevelt The presidency of Theodore Roosevelt started on September 14, 1901, when Theodore Roosevelt became the 26th president of the United States upon the assassination of President William McKinley, and ended on March 4, 1909. Roosevelt had been th ...

, 1901-1909 ** The , a ''Nimitz''-class aircraft carrier * T. Rajendar, Indian filmmaker and politician *

Todd Rundgren Todd Harry Rundgren (born June 22, 1948) is an American multi-instrumentalist, singer, songwriter, multimedia artist, sound engineer and record producer who has performed a diverse range of styles as a solo artist and as a member of the band Ut ...

, American musician and record producer

Places

TR postcode area TR or tr may stand for Arts and entertainment Gaming * Tomb Raider, one of the most successful video game franchises * Terminal Reality, an American video game developer * A currency in online game ''TalesRunner'' * The Terran Republic in the ga ...

, UK postal code for the Truro area *

Travelers Rest, South Carolina Travelers Rest is a city in Greenville County, South Carolina, United States. The population was 4,576 at the 2010 census, a small increase from 4,099 in 2000. By 2018 the population had jumped to 5,253. It is part of the Greenville– Mauld ...

, US *

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a transcontinental country located mainly on the Anatolian Peninsula in Western Asia, with a small portion on the Balkan Peninsula in ...

(ISO 3166-1 alpha-2 country code TR)

Science, technology, and mathematics

Biology and medicine

Thyroid hormone receptor The thyroid hormone receptor (TR) is a type of nuclear receptor that is activated by binding thyroid hormone. TRs act as transcription factors, ultimately affecting the regulation of gene transcription and translation. These receptors also ...

, a nuclear receptor *

Tricuspid regurgitation Tricuspid regurgitation (TR), also called tricuspid insufficiency, is a type of valvular heart disease in which the tricuspid valve of the heart, located between the right atrium and right ventricle, does not close completely when the right ventr ...

, within the heart * Repetition time, magnetic resonance imaging *

Taxonomic rank In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family, order, class, phylum, kingdom, domain. While ...

Computing

.tr .tr is the Internet country code top-level domain (ccTLD) for Turkey. It is administered by trABİS (under the Information and Communication Technologies Authority of Turkey) and managed by the Computer Center DNS Group of the ICT Authority. The ...

, the country code top level domain (ccTLD) for Turkey *

tr (Unix) tr is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. It is an abbreviation of ''translate'' or ''transliterate'', indicating its operation of replacing or removing specific characters in its input data set. Overview The u ...

, command to translate characters * Table row, an HTML element

Vehicles

Thai Rung Union Car Thai Rung Union Car ( th, ไทยรุ่ง) is the only Thai-based automobile manufacturer. The company, established in 1967, began assembling Isuzu, Toyota, Nissan, and Chevrolet vehicles. In addition to assembly, It manufactures its own ...

Toronto Rocket The Toronto Rocket (TR) train is the fifth and latest series of rolling stock used in the Toronto subway system in Toronto, Ontario, Canada. Owned and operated by the Toronto Transit Commission (TTC), the trains were built by Bombardier Transpo ...

, a rolling stock of the Toronto subway *

Triumph Motor Company The Triumph Motor Company was a British car and motor manufacturing company in the 19th and 20th centuries. The marque had its origins in 1885 when Siegfried Bettmann of Nuremberg formed S. Bettmann & Co. and started importing bicycles from E ...

. a sports car designation, e.g. TR2 * Ferrari ''TR'' (set index), several cars

Other uses in science, technology, finance, and mathematics

* TR-1, a version of the

Lockheed U-2 The Lockheed U-2, nicknamed "''Dragon Lady''", is an American single-jet engine, high altitude reconnaissance aircraft operated by the United States Air Force (USAF) and previously flown by the Central Intelligence Agency (CIA). It provides day ...

aircraft. * Technical Report, a type of

ISO ISO is the most common abbreviation for the International Organization for Standardization. ISO or Iso may also refer to: Business and finance * Iso (supermarket), a chain of Danish supermarkets incorporated into the SuperBest chain in 2007 * Iso ...

document. *

Trace (linear algebra) In linear algebra, the trace of a square matrix , denoted , is defined to be the sum of elements on the main diagonal (from the upper left to the lower right) of . The trace is only defined for a square matrix (). It can be proved that the trace o ...

. *

Ton of refrigeration A ton of refrigeration (TR or TOR), also called a refrigeration ton (RT), is a unit of power used in some countries (especially in North America) to describe the heat-extraction capacity of refrigeration and air conditioning equipment. It was o ...

. *

Total return The total return on a portfolio of investments takes into account not only the capital appreciation on the portfolio, but also the income received on the portfolio. The income typically consists of interest, dividends, and securities lending fees. ...

Other uses

Textus Receptus ''Textus Receptus'' (Latin: "received text") refers to all printed editions of the Greek New Testament from Erasmus's ''Novum Instrumentum omne'' (1516) to the 1633 Elzevir edition. It was the most commonly used text type for Protestant deno ...

: Printed Greek New Testament translation sources *

Training routines (Scientology) The training routines (TR) are training exercises or drills used in the Church of Scientology as well as affiliated programs Narconon, Criminon and WISE. The church describes them as a way of learning to communicate effectively and to control s ...

Tax return A tax return is the completion of documentation that calculates an entity or individual's income earned and the amount of taxes to be paid to the government or government organizations or, potentially, back to the taxpayer. Taxation is one of ...

Tax refund A tax refund or tax rebate is a payment to the taxpayer due to the taxpayer having paid more tax than they owed. By country United States According to the Internal Revenue Service, 77% of tax returns filed in 2004 resulted in a refund check ...