Edgepedia

Transversality condition

The transversality condition is a boundary condition that an extremal of a variational or optimal control problem must satisfy when an endpoint is not fixed.

Transversus abdominis (TrA, TVA), the deepest anterolateral abdominal wall muscle; transverse fibers compress viscera, raise intra-abdominal pressure, and tense the linea alba, central to trunk stabilization, DRA rehabilitation, and the TAP block.

Transverse Mercator projection

The Transverse Mercator projection, also called the Gauss-Krüger projection, is a conformal map projection whose scale is true along a central meridian, used in UTM and the British National Grid.

Transverse mode

A transverse mode, also called a spatial mode, is an electromagnetic field pattern measured perpendicular to the beam's propagation, arising in waveguides, optical fibers, and laser resonators.

Transverse momentum

Transverse momentum (pT) is the component of a particle's momentum lying perpendicular to a collider's beam axis. It is key to finding missing or unseen particles.

Transverse momentum dependent distributions

Transverse momentum dependent distributions (TMDs) are nonperturbative functions in quantum chromodynamics describing quarks and gluons inside a hadron by both longitudinal momentum fraction and transverse momentum.

Transverse myelitis

Transverse myelitis (TM), also called acute or idiopathic transverse myelitis, is spinal cord inflammation damaging myelin, causing weakness, sensory loss, and bladder dysfunction below a band-like level; about 1,400 new US cases yearly, treated with IV steroids and plasma exchange.

Sep 29, 2026

Transverse relaxation-optimized spectroscopy

Transverse relaxation-optimized spectroscopy (TROSY) is a nuclear magnetic resonance technique, reported in 1997, that sharpens peaks for large biomolecules in solution, extending NMR to proteins beyond 100 kDa.

Transverse spin of light

The transverse spin of light is spin angular momentum oriented perpendicular to the wave's propagation direction, occurring in evanescent waves, focused beams, and interference fields independent of polarization.

Transverse wave

A transverse wave, also called a shear wave, is a wave whose oscillation is perpendicular to its travel direction, like waves on a string or light.

Sep 29, 2026

Transversus abdominis plane block

The transversus abdominis plane block, or TAP block, is a regional anesthesia technique that relieves pain after abdominal surgery by injecting local anesthetic into the abdominal wall.

Transvestigation

Transvestigation is an online conspiracy theory and practice in which "transvestigators" analyze celebrities' faces and bodies to claim they are secretly transgender, tied to "elite gender inversion," popularized from 2014, debunked as pseudoscience.

Transvestite pass

Transvestite pass (Transvestitenschein): police-issued permit in Imperial and Weimar Germany letting holders wear clothing of another gender without harassment; earliest documented applications 1908, tied to Magnus Hirschfeld's Institute for Sexual Science; frequently revoked under the Nazi state.

Transvision Vamp

Transvision Vamp, English new wave pop-rock band formed in London in 1986 by Wendy James and Nick Christian Sayer; Velveteen (1989) hit UK No. 1 and Baby I Don't Care No. 3. Reunited in 2026 by James and Dave Parsons with a planned 2028 album.

Transwarp Technology (星环科技)

Transwarp Technology (星环科技) is a Shanghai-based developer of big-data and AI infrastructure software, founded by Sun Yuanhao in 2013 and listed on Shanghai's STAR Market.

Transwestern Pipeline

Transwestern Pipeline is an interstate natural gas pipeline system in the central and southwestern United States, owned by Energy Transfer LP. Built in 1959 and 1960, it runs about 2,700 miles.

Transworld Snowboarding

Transworld Snowboarding was an American snowboarding magazine and website, founded in 1987 by Larry Balma and Peggy Cozens in Oceanside, California, that documented the sport until its closure in 2019.

Transylvania

Transylvania (Romanian Transilvania/Ardeal, Hungarian Erdély, German Siebenbürgen) is a Carpathian-enclosed historical region of central Romania, about 56,000 km², a Habsburg province 1711–1918 and part of Romania since 1918.

Oct 3, 2026

Transylvania 6-5000

Transylvania 6-5000 is a 1985 horror-comedy, Rudy De Luca's directorial debut, starring Jeff Goldblum and Ed Begley Jr. as tabloid reporters hunting Frankenstein in Yugoslavia; financed partly by Dow Chemical, it grossed $7.2 million.

Transylvania University

Transylvania University, also called Transylvania College or Kentucky University, is a private liberal arts college in Lexington, Kentucky, chartered 1780 as the first college west of the Alleghenies, with early law and medical schools.

Transylvanian Diet

The Transylvanian Diet (Erdélyi országgyűlés) was the unicameral estates assembly that served as Transylvania's legislature, electing princes under Ottoman suzerainty from 1541 until its 1848 union with Hungary.

Transylvanian Revolution of 1848

The Transylvanian Revolution of 1848 was the Transylvanian phase of the Europe-wide revolutions of 1848, which became a civil war between Romanians and Hungarians lasting until 1849.

Transylvanian Saxon University

The Transylvanian Saxon University (Latin Universitas Saxonum) was the autonomous political corporation of the Transylvanian Saxons in medieval Hungary, confirmed in 1486 and dissolved in 1937.

Transylvanian Saxons

Transylvanian Saxons (Siebenbürger Sachsen), a German-speaking community settled in Transylvania from the 12th century, historically privileged, Lutheran, and largely emigrated to Germany after 1989.

Transylvanian School

The Transylvanian School (Școala Ardeleană) was an Enlightenment movement of Romanian intellectuals in Transylvania, active from the late 18th century into the early 19th century.

TRANSYT

TRANSYT (TRAffic Network StudY Tool) is a computer program for modeling traffic at signalized intersections and optimizing fixed-time signal timings, developed by the UK Transport and Road Research Laboratory in 1967.

Tranylcypromine

Tranylcypromine (TCP), sold as Parnate, is an irreversible, nonselective MAO inhibitor antidepressant related to amphetamine, in clinical use for more than 60 years for treatment-resistant depression.

Trap (2024 film)

Trap is a 2024 American psychological thriller written and directed by M. Night Shyamalan, starring Josh Hartnett as a father whose concert outing is secretly a police sting.

Trap (plumbing)

A plumbing trap, known in forms like the P-trap, S-bend, and U bend, is a curved drain pipe holding a water seal that blocks sewer gases from entering buildings.