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TR or tr may stand for: In official codes: * Tiger Airways IATA code (since September 2003) * Tomahawk Railway, reporting mark * Transbrasil airline IATA code (to 2001) * Turkey, the ISO 3166-1 alpha-2 country code * * .tr, the country code top level domain (ccTLD) for Turkey * tr, the code for the Turkish language, in ISO 639 alpha-1 * TR postcode area, UK postal code for the Truro area * TR-1, Tactical Reconnaissance vwersion of the Lockheed U-2 * Technical Report, a type of ISO document In history: * Theodore Roosevelt, the 26th President of the United States * * The , a ''Nimitz''-class aircraft carrier In engineering, science and computing: * the table row HTML element * tr, a Unix program * trace (linear algebra), the sum of the main diagonal elements of a square matrix in linear algebra * The digraph tr * Transistor * an abbreviation for the trityl (triphenylmethane) group in chemistry In medicine: * Thyroid hormone receptor, a nuclear receptor that is activated by binding thyroid hormone * Tubal reversal, a microsurgery to open and reconnect the fallopian tubes after a tubal ligation procedure * Tricuspid regurgitation, a leakage of blood within the heart In music: * Trill * TR-808, TR-909 etc., 1980s Roland drum machines (for "Transistor Rhythm") * Korg TR, a music workstation synthesizer In games: * Currency in online game ''TalesRunner'' * The Terran Republic, a faction in the game ''PlanetSide'' In transportation: * Talyllyn Railway, the world's first preserved heritage railway in Wales, United Kingdom * Sports cars by the Triumph Motor Company, e.g. Triumph TR2 * Thai Rung Union Car * NZR TR class locomotive * Toronto Rocket, Canada, subway train * Tr., abbreviation of "trail" in street names In places: * Travelers Rest, South Carolina, US In other uses: * Training routines (Scientology) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「tr」の詳細全文を読む スポンサード リンク
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