Edgepedia

Transmetalation

Transmetalation is an organometallic reaction step in which an organic group bound to one metal is transferred to another, the distinguishing step of cross-coupling reactions like Suzuki–Miyaura.

Transmetropolitan is a 60-issue DC Comics series (1997-2002) by Warren Ellis and Darick Robertson, first under Helix then Vertigo, following gonzo journalist Spider Jerusalem in a future City against presidents The Beast and The Smiler.

Transmigration program

The transmigration program, known in Indonesian as Transmigrasi, is an Indonesian government program moving people, usually voluntarily, from crowded islands such as Java to less populated regions, begun under Dutch rule in 1905.

TransMilenio

TransMilenio is a bus rapid transit system serving Bogotá, Colombia, with articulated buses on dedicated busways. Opened in 2000, it became a model for more than 100 cities.

Transmissibility

Transmissibility is the dimensionless ratio of a vibration output to its input, showing how much force or motion passes through a vibration isolator in force or motion excitation.

Oct 21, 2026

Transmissible gastroenteritis

Transmissible gastroenteritis (TGE), caused by TGE virus (TGEV), an Alphacoronavirus, is an acute, highly contagious viral enteric disease of swine with diarrhoea, vomiting, and near-total mortality in piglets under 2 weeks; a related respiratory variant, PRCV, complicates diagnosis.

Transmissible spongiform encephalopathy

Transmissible spongiform encephalopathies (TSEs), also called prion diseases, are rare, invariably fatal degenerative brain disorders caused by misfolded prion protein; human forms include Creutzfeldt-Jakob disease, kuru, and fatal familial insomnia.

Transmission (festival)

Transmission (festival) mainly names the Prague-based trance event founded in 2006 by United Music, held at the O2 Arena with themed arena shows; also Transmissions Festival, Ravenna's experimental music festival by Bronson Produzioni.

Transmission and rediscovery of classical drama

The transmission and rediscovery of classical drama is the story of how ancient Greek and Roman plays survived through Byzantine copyists and chance manuscripts into Renaissance printed editions, with only 32 complete Greek tragedies extant.

Transmission coefficient

The transmission coefficient is a dimensionless ratio of how much of a wave passes through an interface or barrier, defined across physics and engineering as amplitude, power, or probability ratios.

Transmission Company of Nigeria

The Transmission Company of Nigeria (TCN) is the state-owned company that owns and operates Nigeria's national electricity transmission grid, created in 2005 from the unbundled PHCN.

Transmission Control Protocol

The Transmission Control Protocol (TCP), a transport protocol of the Internet protocol suite, provides applications with reliable, in-order byte streams over IP, first specified in RFC 793 in 1981.

Transmission disequilibrium test

The transmission disequilibrium test (TDT) is a family-based genetic association test asking whether a heterozygous parent transmits an allele to an affected offspring more often than Mendelian expectation.

Transmission electron microscopy

Transmission electron microscopy (TEM) is an imaging technique in which a beam of electrons passes through an ultrathin specimen, forming images of internal structure at atomic resolution.

Transmission error

Transmission error is the deviation of a driven gear's angular position from that of a geometrically perfect, rigid gear mesh, and the main source of gear vibration and whine.

Transmission gate

A transmission gate, or analog switch, is a CMOS switch of parallel NMOS and PMOS transistors that conducts in either direction and builds latches, flip-flops, and multiplexers.

Transmission Kikuchi diffraction

Transmission Kikuchi diffraction (TKD), also called transmission EBSD or t-EFSD, is an electron diffraction technique in the scanning electron microscope that maps crystal orientation and phase of thin foils at 2–10 nm resolution.

Transmission line

A transmission line guides electromagnetic energy from one place to another, described by distributed capacitance and inductance; types include coaxial cable, balanced pairs, waveguide, and planar circuit-board lines.

Transmission medium

A transmission medium is the substance or field through which a wave carries energy. Mechanical waves like sound need one; light and radio travel through vacuum.

Transmission of the Pali Canon

The transmission of the Pali Canon is how the Tipitaka, the scriptural collection of Theravada Buddhism, moved from oral recitation to palm-leaf manuscripts and printed editions.

Transmission Records discography

Transmission Records was a Dutch record label founded in 1995 in Maassluis, specializing in progressive and symphonic metal, with releases by Ayreon, After Forever, and Epica.

Transmission scan

A transmission scan is a nuclear medicine procedure that measures how tissue absorbs photons, producing an attenuation map used to correct PET and SPECT images.

Transmission tower

A transmission tower, also known as an electric pylon or by the German name Hochspannungsmast, is a tall structure, usually a steel lattice, that carries high-voltage conductors of an overhead transmission line.

Transmission voie-machine

Transmission voie-machine (TVM) is the French cab signaling and automatic train protection system that displays speed instructions in the cab via coded track circuits, used since 1981.

Transmission X-ray microscopy

Transmission X-ray microscopy (TXM) is an X-ray imaging technique that forms magnified images from X-rays transmitted through a specimen, reaching 20–100 nm resolution and enabling 3D tomography.

Transmissivity (hydrogeology)

Transmissivity is an aquifer property measuring the rate water is transmitted through a unit width under a unit hydraulic gradient; it equals hydraulic conductivity times aquifer thickness.

Transmit diversity

Transmit diversity is a wireless communication technique that sends redundant copies of a signal through multiple transmit antennas to combat multipath fading, improving reliability without needing multiple antennas at the receiver.

Transmit power control

Transmit power control (TPC) is a mechanism by which a radio transmitter dynamically adjusts its output power, reducing interference and energy use, standardized in IEEE 802.11h.

Transmittance

Transmittance, also called light or percent transmittance, is the ratio of radiant power transmitted through a sample to the power incident on it, central to spectrophotometry and characterizing filters and windows.