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Truncated signed distance field
A truncated signed distance field (TSDF) is a 3D reconstruction representation where each voxel stores the signed distance to the nearest surface, clipped to a narrow band.
Truncated singular value decomposition
Truncated singular value decomposition (TSVD) keeps only the k largest singular values of a matrix, giving its best rank-k approximation and regularizing ill-posed inverse problems.
Truncatelloidea
Truncatelloidea (Gray, 1840) is a superfamily of minute caenogastropod snails in Littorinimorpha, with 34 extant families including Hydrobiidae, the largest freshwater gastropod family, inhabiting freshwater, marine, brackish, and terrestrial habitats.
Truncation error
Truncation error, the error a numerical method makes by replacing an exact operation with a finite approximation, arises from truncating an infinite Taylor series and, with stability, implies convergence.
Truncus arteriosus
Truncus arteriosus (common arterial trunk, persistent truncus arteriosus): rare cyanotic congenital heart defect with one arterial trunk, single truncal valve, and VSD; needs neonatal repair, with near-inevitable conduit reinterventions and 22q11.2 association.
Trundholm Sun Chariot
The Trundholm Sun Chariot (Danish: Solvognen) is a Nordic Bronze Age image of a horse pulling a gilded sun disc, found in Denmark in 1902.
Trung Duc Lu
Trung Duc Lu (Lư Đức Trung), Vietnamese-born fugitive and suspected Born to Kill (BTK/Canal Boys) gang member, added to the FBI Ten Most Wanted list March 11, 2026 as its 539th fugitive for the 2014 torture, kidnapping, and murder of two Vietnamese brothers in Philadelphia; $1 million reward, last confirmed in Vietnam.
Trung Nhi
Trung Nhi (Trưng Nhị) was a Vietnamese general and, by one tradition, deputy queen who with her elder sister Trung Trac ruled an independent state from 40 CE until their defeat in 43 CE.
Trung sisters' rebellion
The Trung sisters' rebellion (Khởi nghĩa Hai Bà Trưng) was a 40 CE uprising in northern Vietnam against Han rule, led by Trung Trac and Trung Nhi.
Trung Trac
Trung Trac (Trưng Trắc) was a Vietnamese queen who led the 40 CE revolt against Chinese Han rule and reigned as Trung Vuong until her defeat in 43.
Trunk (luggage)
A trunk is a large rigid chest with a hinged lid and locks used as travel luggage, dominant from the 19th century until suitcases displaced it.
Trunk carrier
A trunk carrier is a company operating the long-haul core of a network, either a telecom interexchange carrier or a major US trunk airline regulated by the Civil Aeronautics Board.
Trunked radio system
A trunked radio system is a two-way radio system in which a control channel automatically assigns voice frequencies to shared talkgroups, introduced in the US in 1974.
Trunkline Gas Pipeline
Trunkline Gas Pipeline is an interstate natural gas pipeline built by Panhandle Eastern and placed in service in 1951, running about 1,400 miles from the Gulf Coast to Michigan.
Trunks (トランクス) (Dragon Ball)
Trunks (トランクス), also called Future Trunks, is a Dragon Ball character, son of Vegeta and Bulma, a sword-wielding Super Saiyan from a ruined future who kills Frieza, warns of the androids, and later stars in Dragon Ball Super's Goku Black arc.
Trường Chinh
Trường Chinh, born Đặng Xuân Khu, was a Vietnamese communist leader who thrice led the Communist Party of Vietnam and served as head of state from 1981 to 1987.
Truong Dinh
Truong Dinh (Trương Định, 1820–1864) was a Vietnamese military commander and guerrilla leader who resisted the French conquest of southern Vietnam from 1859, refusing to disarm after the Nguyen court made peace in 1862.
Truong Gia Binh
Truong Gia Binh (Trương Gia Bình, born 1956) is a Vietnamese mathematician-turned-businessman who co-founded FPT Corporation in 1988 and chairs it, Vietnam's leading technology conglomerate.
Truong Han Sieu
Truong Han Sieu (Trương Hán Siêu) was a scholar-official of Dai Viet who served four Tran kings, fought the Mongol-Yuan invasions, and wrote the rhapsody Bach Dang giang phu.
Trương Mỹ Lan
Trương Mỹ Lan (张美兰) — Vietnamese real estate tycoon, chairwoman of Van Thinh Phat, secretly controlled SCB and embezzled $12.5 billion, Vietnam's largest fraud; sentenced to death April 2024.
Truong Vinh Ky
Truong Vinh Ky (Trương Vĩnh Ký), known in French as Petrus Ky, was a Vietnamese Catholic scholar, linguist, and journalist, editor-in-chief of Gia Định Báo from 1869.
Truphena Muthoni
Truphena Muthoni (born 2003) is a Kenyan environmentalist, founder of Hug the Earth, and Guinness World Record holder for the longest tree-hugging marathon: 72 hours in Nyeri, December 8-11, 2025, beating her own 48-hour record.
Truro
Truro (Cornish Truru) is Cornwall's only city and its administrative centre, at the head of the Fal Estuary. Chartered about 1175, a stannary town, cathedral city since 1876-1910, population 19,395 (2021).
Truss
A truss is a structure of individual members, each in tension or compression, connected at joints in triangular patterns that give rigidity with little material, most prominently in bridges.
Truss bridge
A truss bridge is a bridge whose load-carrying superstructure is a truss, a triangular framework whose members carry axial tension or compression, making efficient use of timber, iron, or steel.
Truss bridges in the United States
Truss bridges in the United States are metal bridges whose loads are carried by tension and compression frameworks; about 7,300 survive, mostly built between 1900 and 1930.
Truss mini-budget
The Truss mini-budget was a September 2022 UK fiscal statement announcing £45 billion of unfunded tax cuts that triggered a market crisis and Truss's resignation.
Truss model
A truss model is a structural analysis idealization that represents a structure as triangulated straight members with pinned joints, so every member carries only axial tension or compression.
Trusses
Trusses (hernia trusses, hernia belts) are surgical appliances with a pad and spring or belt that hold a reduced inguinal hernia in place; used when surgery is deferred, with documented complications and weak trial evidence.
Trust
Trust most often means confidence in or dependence on a person or quality, and in law names a relationship where one person holds property for another's benefit.