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Trans Canada Trail
Trans Canada Trail (The Great Trail, 2016-2021) is the world's longest multi-use recreational trail network, over 30,000 km across all Canadian provinces and territories, stewarded by a registered charity and funded federally through Parks Canada.
Trans effect
The trans effect is a ligand's ability to accelerate substitution of the ligand trans to it in a coordination complex, most prominently in square-planar platinum(II).
Trans Europa Naturgas Pipeline
The Trans Europa Naturgas Pipeline (TENP) is a 500 km German natural gas pipeline, built 1972 to 1974, running from the Dutch and Belgian borders to the Swiss border.
Trans fat
Trans fat (trans-fatty acid, TFA): unsaturated fat with trans double bonds, from partial hydrogenation of oils or ruminant bacteria; raises LDL, lowers HDL, and is being eliminated by WHO REPLACE policies in 53 countries.
Trans man
Trans man (FTM): a man assigned female at birth. Covers terminology, testosterone-based masculinizing therapy and its risks, US population share (730,500 adults), healthcare discrimination, pregnancy, and legal recognition.
Trans Mountain pipeline
The Trans Mountain pipeline is a Canadian crude oil pipeline running about 1,180 km from Edmonton, Alberta to Burnaby, British Columbia, built in 1953 and expanded in 2024.
Trans Nzoia
Trans Nzoia County, Kenya county in former Rift Valley Province, capital Kitale, 990,341 people (2019), 2,495.6 km²; called Kenya's basket for commercial maize, tea, coffee, dairy.
Trans Québec and Maritimes (TQM) Pipeline
The Trans Québec and Maritimes (TQM) Pipeline is a 655 km Canadian natural gas pipeline, in service since 1982 and owned equally by TC Energy and Énergir.
Trans woman
A trans woman is a woman assigned male at birth; older terms transsexual woman and MTF. Covers terminology, WHO/DSM reclassification, gender-affirming care, HIV and health disparities, and legal recognition worldwide.
Trans World Airlines
Trans World Airlines (TWA), originally Transcontinental & Western Air, was a major American airline based in Missouri that operated from 1930 to 2001, when American Airlines acquired its assets.
Trans World Airlines Flight 847
Trans World Airlines Flight 847 was a Boeing 727 flight from Athens to Rome hijacked by Lebanese hijackers in June 1985 and held for 17 days.
trans-2-Butene
trans-2-Butene, or (E)-but-2-ene, is the trans stereoisomer of 2-butene, a colorless, flammable gas boiling at 0.9 °C used mainly to make butadiene and propylene.
Trans-acting siRNA
Trans-acting siRNA (ta-siRNA, tasiRNA) is a plant-specific 21-nt phased siRNA made from TAS loci via miRNA cleavage, SGS3, RDR6, and DCL4; it silences genes in trans, notably ARFs through the conserved miR390-TAS3 pathway.
Trans-activating transcriptional regulator
Trans-activating transcriptional regulator (TATR, Pfam PF03430) is the baculovirus IE-1 protein family: a viral transactivator of early promoters that also drives viral DNA replication; the name also appears for HIV-1 Tat.
Trans-African Highway network
The Trans-African Highway network, or African Highways, is a planned system of nine international road corridors totaling about 52,450 km, descended from 1960s UNECA planning.
Trans-Alaska Pipeline System
The Trans-Alaska Pipeline System, also known as the Alaska Pipeline, is an 800-mile oil pipeline from Prudhoe Bay to Valdez, completed in 1977 for $8 billion.
Trans-Allegheny Interstate Line Company
The Trans-Allegheny Interstate Line Company (TrAILCo) is an electric transmission company formed in October 2006 by Allegheny Energy to build the high-voltage TrAIL transmission line, and is now a FirstEnergy subsidiary.
Trans-Allegheny Lunatic Asylum
Trans-Allegheny Lunatic Asylum, also Weston State Hospital and West Virginia Hospital for the Insane: Kirkbride Plan psychiatric hospital in Weston, West Virginia, operated 1864-1994, built 1858-1881, now a privately owned tour site.
Trans-Am Series
Trans-Am Series (Trans-American Sedan Championship), North American SCCA-founded professional road racing series since 1966; first race March 25, 1966 at Sebring; classes TA, TA2, XGT, SGT, GT; 60th anniversary in 2026.
Trans-Anatolian Gas Pipeline
The Trans-Anatolian Gas Pipeline (TANAP) is a 1,811 km natural gas pipeline across Turkey carrying Azerbaijani gas from the Shah Deniz field to Turkey and Europe.
Trans-Arabian Oil Pipeline
The Trans-Arabian Oil Pipeline, known as the Tapline, was a 1,648-kilometer crude oil pipeline from eastern Saudi Arabia to Sidon in Lebanon, the world's largest when it opened in 1950.
Trans-Austria Gas Pipeline
The Trans-Austria Gas Pipeline, or TAG, is an Austrian natural gas pipeline system, commissioned in 1974, running from the Slovak border near Baumgarten to the Italian border near Arnoldstein.
Trans-Canada Air Lines
Trans-Canada Air Lines, also known as TCA or Lignes aériennes Trans-Canada, was Canada's government-owned transcontinental airline, created in 1937 and renamed Air Canada on January 1, 1965.
Trans-Canada Highway
The Trans-Canada Highway (Route Transcanadienne) is Canada's longest national road, running 7,821 km from St. John's to Victoria through all ten provinces; built between 1950 and 1962, it was the longest national highway in the world.
Trans-Canada Highwaymen
The Trans-Canada Highwaymen are a Canadian rock supergroup formed in 2017, made up of Moe Berg, Chris Murphy, Craig Northey, and Steven Page, who play each other's hits.
Trans-Caspian International Transport Route
The Trans-Caspian International Transport Route, known as the Middle Corridor, is a freight route linking China and Europe via Central Asia, the Caspian Sea, and Türkiye.
trans-Cyclooctene
trans-Cyclooctene is a strained eight-membered cyclic alkene, the smallest ring that holds a stable trans double bond, used in the fast tetrazine ligation for bioorthogonal chemistry.
Trans-Europe Express (album)
Trans-Europe Express (Trans Europa Express) is Kraftwerk's sixth studio album, released March 1977. Recorded at their Kling Klang Studio, Düsseldorf; issued in separate German and English versions; sampled for Afrika Bambaataa's Planet Rock.
Trans-European Transport Network
The Trans-European Transport Network (TEN-T) is the European Union's framework for planning railways, ports, and roads across the EU, set out in guidelines first agreed in 1996 and revised in 2024.
Trans-Iranian Railway
The Trans-Iranian Railway (Persian: راهآهن سراسری ایران) is a 1,394-kilometer line linking the Caspian Sea to the Persian Gulf, built 1927 to 1938 under Reza Shah.