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Transseries
A transseries, also called a logarithmic-exponential series, is a formal asymptotic series built from real numbers and an infinitely large variable, introduced by Jean Écalle and used in asymptotic differential algebra, model theory, and physics.
Transsexual
Transsexual: a clinical term for transgender people whose gender identity differs from their assigned sex and who seek medical transition (hormones, surgery); coined by Hirschfeld (1923) and Cauldwell (1949), defined by Benjamin's 1966 work, now largely replaced by transgender except in ICD-10 and legal contexts.
Transshipment system for the six circuits (zhuanban fa)
The transshipment system for the six circuits (转般法) was the Song dynasty's method of moving tribute grain from six southeastern circuits to the capital via depots.
Transsion (传音控股)
Transsion Holdings (传音控股) is a Chinese mobile phone manufacturer founded in Shenzhen in 2006, long the top phone seller in Africa through its TECNO, Infinix, and itel brands.
Transsphenoidal surgery
Transsphenoidal surgery, also called endoscopic transsphenoidal surgery, removes pituitary adenomas through the nasal cavity and sphenoid sinus, and is the mainstay treatment for most pituitary tumors.
Transsulfuration pathway
Transsulfuration pathway: mammalian route converting homocysteine plus serine to cysteine via cystathionine, catalyzed by the vitamin B6-dependent enzymes CBS and CSE; produces glutathione precursor cysteine and hydrogen sulfide, regulated by SAM.
Transtage
The Transtage was a restartable hypergolic upper stage built by Martin Marietta for the Air Force's Titan III and Titan 34D rockets, flying 47 missions between 1964 and 1989.
Transtension
Transtension is rock deformation combining strike-slip shearing with extension across the shear zone, forming pull-apart basins; the term was introduced by W. Brian Harland in 1971.
Transtheoretical model
Transtheoretical Model (TTM), or stages of change model, by Prochaska and DiClemente: behavior change through precontemplation, contemplation, preparation, action, and maintenance, with decisional balance, self-efficacy, and 10 change processes.
TransThera Sciences (药捷安康)
TransThera Sciences (药捷安康) is a clinical-stage biopharmaceutical company founded in Nanjing, China, in 2014, known for tinengotinib, a kinase inhibitor for cholangiocarcinoma filed for approval in 2025.
Transthoracic echocardiogram
Transthoracic echocardiogram (TTE), also called transthoracic echocardiography: ultrasound heart scan through the chest, pioneered by Edler and Hertz in Lund in 1953; assesses chambers, valves, and function, with known blind spots and MRI-comparison caveats.
Transthoracic echocardiography
Transthoracic echocardiography (TTE) is the most widely used imaging test in cardiology, an ultrasound of the heart performed through the chest wall to assess heart function, chambers, and valves.
Transthoracic needle biopsy
Transthoracic needle biopsy is a percutaneous procedure in which a needle is inserted through the chest wall, usually under imaging guidance, to sample lung or mediastinal lesions for diagnosis.
Transtympanic Micropressure Treatment
Transtympanic micropressure treatment (Meniett therapy, positive pressure therapy) delivers 5–20 cmH2O air pressure pulses to the middle ear via a tympanostomy tube to treat Ménière's disease vertigo; RCT evidence shows no benefit over placebo.
Transubstantiation
Transubstantiation is the Catholic doctrine that at the consecration of the Mass the whole substance of bread and wine becomes Christ's body and blood, while only their appearances remain.
TransUnion
TransUnion, also known as Trans Union LLC, is an American consumer credit reporting agency headquartered in Chicago, one of the Big Three bureaus with Equifax and Experian.
Transuranic waste
Transuranic waste (TRU waste) is radioactive waste containing alpha-emitting elements heavier than uranium, mostly contaminated clothing, tools, and debris from the US nuclear defense program since the 1940s.
Transuranium element
Transuranium elements, also called transuranic elements, are radioactive chemical elements with atomic numbers above 92, produced artificially since neptunium was first synthesized at Berkeley in 1940.
Transurban
Transurban is an Australian toll road company formed in 1995 to build Melbourne's CityLink, now Australia's largest operator with 22 toll roads across Melbourne, Sydney, Brisbane, and the Greater Washington Area.
Transurban Group
Transurban Group is an Australian toll-road developer and operator holding interests in toll roads in Melbourne, Sydney, Brisbane, and the Greater Washington Area under long-term concession contracts.
Transurethral resection
Transurethral resection is an endoscopic operation that cuts away bladder tumors or prostate adenoma with a wire loop passed through the urethra inside a resectoscope.
Transurethral Resection of Bladder
Transurethral resection of bladder tumor (TURBT) is the standard endoscopic procedure to diagnose, stage, and treat bladder cancer via the urethra, using a resectoscope; key quality markers are detrusor muscle sampling, repeat resection within six weeks when needed, and immediate intravesical chemotherapy.
Transurethral resection of the prostate
Transurethral resection of the prostate (TURP) is the endoscopic removal of obstructing prostate tissue via a wire-loop resectoscope through the urethra, done for BPH-related urinary obstruction. Introduced by Stern in 1926, it remains a benchmark surgical BPH treatment alongside HoLEP and GreenLight laser.
Transurethral ultrasound ablation
Transurethral ultrasound ablation (TULSA) is a minimally invasive treatment that destroys prostate tissue with directional ultrasound from a rotating urethral applicator, guided in real time by MRI thermometry.
Transvaal Colony
Transvaal Colony: British colony (1900–1910) replacing the Zuid-Afrikaansche Republiek north of the Vaal River; crown colony under Milner, responsible government 1906, Union of South Africa province 1910.
Transvaal Uitlander franchise law (1890)
The Transvaal Uitlander franchise law (Kiesregswet) of 1890, issued under President Paul Kruger, gave foreign gold miners a Second Volksraad vote after two years and full citizenship only after fourteen.
Transvenous lead extraction
Transvenous lead extraction is a catheter-based procedure that removes pacemaker or defibrillator leads through the veins, mainly for infection, with complete success above 95% and major complications near 1%.
Transvenous pacing
Transvenous pacing is a temporary procedure in which a pacing catheter passed through a vein into the right ventricle delivers electrical impulses to maintain heart rate in bradyarrhythmias.
Transversal equalizer
A transversal equalizer is a tapped delay line filter that corrects intersymbol interference in received signals, serving as the standard structure for adaptive equalization in digital receivers.
Transversal gate
A transversal gate is a logical gate on a quantum error-correcting code, applied to each qubit separately so errors cannot spread within a block; the Eastin–Knill theorem bars a universal transversal set.