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mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 116197
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tetrathionate hydrolase<enzyme> From thiobacillus acidophilus; converts tetrathionate into thiosulfate, sulfur, and sulfate; also converts pentathionate ... Registry number: EC 3.12.1.- ... (26 Jun 1999) ...
tetrathionate reductase<enzyme> Tetrathionate is reduced to thiosulfate ... Registry number: EC 1.7.- ... (26 Jun 1999) ...
tetrathionic acid<chemical> Tetrathionic acid (hoso2ssso3h). A sulfuric acid dimer, formed by disulfide linkage. This compound has been used to prolong coagulation time and as an antidote in cyanide poisoning. ... Pharmacological action: anticoagulant, antidotes, indicators and reagents. ... Chemical name: Tetrathionic acid ... (12 Dec 1998) ...
TetratrichomonasA genus of parasitic protozoan flagellates, formerly part of the genus Trichomonas but now separated into a distinct genus by the presence of four anterior and one trailing flagella, a pelta, and a disc-shaped parabasal body. ... See: Trichomonas. ... Origin: tetra-+ Trichomonas ... Tetratrichomonas ovis, a species that occurs in the caecum or rumen o …
tetrazo-<chemistry, prefix> A combining form (also used adjectively), designating any one of a series of double derivatives of the azo and diazo compounds containing four atoms of nitrogen. ... (29 Oct 1998) ...
tetrazoleThe compound CN4H2 with the structure of tetrazolium. ... (05 Mar 2000) ...
tetrazoliumAny of a group of organic salts having the general structure which on reduction (cleaving the 2,3 bond) yields a coloured insoluble formazan; used as a reagent in oxidative enzyme histochemistry. ... Nitroblue tetrazolium (NBT), a pale yellow dye that is converted on reduction to coloured formazans in the histochemical demonstration of dehydrogenase …
tetrazolium salts<chemical> Quaternary salts derived from tetrazoles. They are used in tests to distinguish between reducing sugars and simple aldehydes, for detection of dehydrogenase in tissues, cells, and bacteria, for determination of corticosteroids, and in colour photography. ... Pharmacological action: indicators and reagents. ... (12 Dec 1998) ...
tetrazonium saltsDiazonium salt's that contain three azo groups. ... (05 Mar 2000) ...
tetrodon<zoology> Any one of numerous species of plectognath fishes belonging to Tetrodon and allied genera. Each jaw is furnished with two large, thick, beaklike, bony teeth. ... Alternative forms: tetradon. ... The skin is usually spinous, and the belly is capable of being greatly distended by air or water. It includes the swellfish, puffer, and simi …
tetrodotoxin<protein> A potent neurotoxin (319 D) from the Japanese puffer fish. It binds to the sodium channel, blocking the passage of action potentials. Its activity closely resembles that of saxitoxin. ... (18 Nov 1997) ...
tetroseGeneral term for a monosaccharide with 4 carbon atoms. ... (18 Nov 1997) ...
tetrotusA malformed individual with four ears, four eyes, two faces, and two almost separate heads. ... Synonym: tetraotus. ... Origin: tetra-+ G. Ous (ot-), ear ... (05 Mar 2000) ...
TeutlebenF.E.K. Von, German anatomist, 1842-?. ... See: Teutleben's ligament. ... (05 Mar 2000) ...
Teutleben's ligamentSynonym for pulmonary ligament ... <anatomy> Two-layered fold formed as the pleura of the mediastinum is reflected onto the lung inferior to the root of the lung. ... Synonym: ligamentum pulmonale, ligamentum latum pulmonis, Teutleben's ligament. ... (05 Mar 2000) ...
teutonic1. Of or pertaining to the Teutons, especially. The ancient Teutons; Germanic. ... 2. Of or pertaining to any of the Teutonic languages, or the peoples who speak these languages. Teutonic languages, a group of languages forming a division of the Indo-European, or Aryan, family, and embracing the High German, Low German, Gothic, and Scandinavian dial …
Texas feverSynonym for bovine babesiosis ... An infectious disease of cattle caused by Babesia species and transmitted by ticks. ... Synonym: bovine haemoglobinuria, redwater fever, Texas fever, tick fever. ... (05 Mar 2000) ...
Texas snakerootAristolochia reticulata, a botanical source of serpentaria. ... (05 Mar 2000) ...
text blindnessLoss of the ability to understand printed words or sentences ... (27 Sep 1997) ...
textiformWeblike. ... Origin: L. Textum, something woven ... (05 Mar 2000) ...
textilePertaining to weaving or to woven fabrics; as, textile arts; woven, capable of being woven; formed by weaving; as, textile fabrics. ... <zoology> Textile cone, a beautiful cone shell (Conus textilis) in which the colours are arranged so that they resemble certain kinds of cloth. ... Origin: L. Textilis, fr. Texere to weave: cf. F. Textile. See …
textile industryThe aggregate business enterprise of manufacturing textiles. ... (12 Dec 1998) ...
texturalRelating to the texture of the tissues. ... (05 Mar 2000) ...
texture1. The act or art of weaving. ... 2. That which woven; a woven fabric; a web. 'Others, apart far in the grassy dale, Or roughening waste, their humble texture weave.' (Thomson) ... 3. The disposition or connection of threads, filaments, or other slender bodies, interwoven; as, the texture of cloth or of a spider's web. ... 4. The disposition of the se …
textusA tissue. ... Origin: L. ... (05 Mar 2000) ...
Tg cellsA subset of T-cells that have an Fc receptor for immunoglobulin G molecules. ... (05 Mar 2000) ...
TGC<abbreviation> Time-varied gain control, time-gain compensation. ... (05 Mar 2000) ...
TGE<abbreviation> Transmissible gastroenteritis of swine. ... (05 Mar 2000) ...
TGE virusSynonym for transmissible gastroenteritis virus of swine ... A coronavirus that causes transmissible gastroenteritis of swine. ... Synonym: TGE virus. ... (05 Mar 2000) ...
TGFSynonym for transforming growth factor ... <growth factor> Proteins secreted by transformed cells that can stimulate growth of normal cells. ... Unfortunate misnomer, since they induce aspects of transformed phenotype, such as growth in semi solid agar, but do not actually transform. ... Transforming growth factor alpha, 50 amino acid polypeptid …
TGF-beta receptor protein kinase<enzyme> Belongs to the receptor-type serine-threonine kinase subfamily; from chick embryo, related to type II receptor for tgf-beta; 502 aa residues, mw 56,766 da; aa sequence given in first source ... Registry number: EC 2.7.1.- ... Synonym: tgf-beta rpk, rpk-1, rpk-2 ... (26 Jun 1999) ...
TGFa<abbreviation> Transforming growth factor a. ... (05 Mar 2000) ...
TGFb<abbreviation> Transforming growth factor b. ... (05 Mar 2000) ...
ThSymbol for thorium. ... (05 Mar 2000) ...
th1 cellsSubset of helper-inducer T-lymphocytes which synthesise and secrete interleukin-2, gamma-interferon, and interleukin-12. Due to their ability to kill antigen-presenting cells and their lymphokine-mediated effector activity, th1 cells are associated with vigorous delayed-type hypersensitivity reactions. ... (12 Dec 1998) ...
th1 response<immunology> An acquired immune response whose most prominent feature is high cytotoxic T lymphocyte activity relative to the amount of antibody production. The Th1 response is promoted by CD4+ Th1 T helper cells. ... See: Th2 Response. ... (09 Oct 1997) ...
th2 cellsSubset of helper-inducer T-lymphocytes which synthesise and secrete the interleukins il-4, il-5, il-6, and il-10. These cytokines influence B-cell development and antibody production as well as augmenting humoral responses. ... (12 Dec 1998) ...
th2 response<immunology> An acquired immune response whose most prominent feature is high antibody production relative to the amount of cytotoxic T lymphocyte activity The Th2 response is promoted by CD4+ Th2 T helper cells. ... See: TO Response. ... (09 Oct 1997) ...
Thal procedureCorrection of a benign stricturing of the lower oesophagus in which the narrowed area is opened to full-thickness longitudinally and the adjacent external gastric wall is patch sutured over this defect to restore luminal circumference and continuity. ... (05 Mar 2000) ...
Thal, Alan<person> U.S. Surgeon, *1925. ... See: Thal procedure. ... (05 Mar 2000) ...
thalam-See: thalamo-. ... (05 Mar 2000) ...
thalamectomySee: chemothalamectomy. ... Origin: thalamus + G. Ektome, excision ... (05 Mar 2000) ...
thalamencephalicRelating to the thalamencephalon. ... (05 Mar 2000) ...
thalamic fasciculusNerve fibres forming a composite bundle containing cerebellothalamic (crossed) and pallidothalamic (uncrossed) fibres that is insinuated between the thalamus and zona incerta. ... See: fields of Forel. ... Synonym: fasciculus thalamicus. ... (05 Mar 2000) ...
thalamic gustatory nucleusSynonym for arcuate nucleus of thalamus ... The small ventral region of the ventral posteromedial nucleus of thalamus in which the fibres of the gustatory lemniscus and secondary trigeminal tracts terminate; it projects to the lower part of the postcentral gyrus of the cerebral cortex. ... Synonym: arcuate nucleus, nucleus arcuatus thalami, nucleus a …
thalamic nucleiSeveral groups of nuclei in the thalamus that serve as the major relay centres for sensory impulses in the brain. ... (12 Dec 1998) ...
thalamic syndrome<syndrome> A syndrome produced by infarction of the postero-inferior thalamus causing transient hemiparesis, severe loss of superficial and deep sensation with preservation of crude pain in the hypalgic limbs which frequently have vasomotor or trophic disturbances. ... Synonym: Dejerine-Roussy syndrome. ... (05 Mar 2000) ...
thalamic teniaSynonym for tenia thalami ... The sharp edge or angle between the superior and medial surface of the thalamus on either side; to it is attached the epithelial lamina forming the roof of the third ventricle. ... Synonym: tenia ventriculi tertii, thalamic tenia. ... (05 Mar 2000) ...
thalamo-Thalam- ... The thalamus. ... Origin: G. Thalamos, bedroom (thalamus) ... (05 Mar 2000) ...
thalamocorticalRelating to the efferent connections of the thalamus with the cerebral cortex. ... (05 Mar 2000) ...
thalamocortical fibresA general term identifying nerve fibres arising from nuclei of the thalamus and projecting to, and terminating in, the cerebral cortex. ... (05 Mar 2000) ...
thalamolenticularRelating to the thalamus, usually the dorsal thalamus, and the lenticular nucleus (putamen and globus pallidus). ... (05 Mar 2000) ...
thalamostriate veinsSee: inferior thalamostriate veins, superior thalamostriate vein. ... (05 Mar 2000) ...
thalamotomy<procedure> Destruction of a selected portion of the thalamus by stereotaxy for the relief of pain, involuntary movements, epilepsy, and, rarely, emotional disturbances; produces few, if any, neurological deficits or undesirable personality changes. ... Origin: thalamus + G. Tome, incision ... (05 Mar 2000) ...
thalamus<anatomy> Either of two large, ovoid masses, consisting chiefly of grey substance, situated one on each side of and forming part of the lateral wall of the third ventricle. It is divided into two major parts: dorsal and ventral, each of which contains many nuclei. ... Origin: L., Gr. Thalamos = inner chamber ... (18 Nov 1997) ...
thalassaemia<haematology> A genetic form of anaemia in which there is abnormality of the globin portion of haemoglobin. ... Affected individuals cannot synthesise haemoglobin properly, and they produce small, pale, short-lived red blood cells. ... Widespread in Mediterranean countries. ... Origin: Gr. Haima = blood ... (11 Jan 1998) ...
thalassaemia intermediaA clinical variant of thalassaemia characterised by an intermediate degree of severity. These patients have severe anaemia but usually do not require regular blood transfusions. Intermedia disorders represented a heterogeneous group of genetic disorders and may include cases with homozygous or heterozygous abnormalities in the beta-globin chain gen …
thalassaemia majorThe dire disease also known as beta thalassaemia. The clinical picture of this form of anaemia was first described in 1925 by the paediatrician thomas benton cooley. Other names for the disease are cooley's anaemia and mediterranean anaemia. The term thalassaemia was coined by the nobel prise winning pathologist george whipple and the professor of …
thalassaemia minorAlso called thalassaemia trait, thalassaemia minor is the carrier state for beta thalassaemia. People who are carriers (heterozygotes) have just one thalassaemia gene, are said to have thalassaemia minor, and are essentially normal. ... (12 Dec 1998) ...
thalassaemia, betaAlso known as thalassaemia major.The clinical picture of this important type of anaemia was first described in 1925 by the paediatrician thomas benton cooley. Other names for the disease are cooley's anaemia and mediterranean anaemia. The name thalassaemia was coined by the nobel prise winning pathologist george whipple and the professor of paediat …
thalassophobia<psychology> Morbid fear of the sea. ... Origin: G. Thalassa, the sea, + phobos, fear ... (05 Mar 2000) ...
thalassoposiaSynonym: mariposia. ... Origin: G. Thalassa, the sea, + posis, drinking ... (05 Mar 2000) ...
thalassotherapyThe therapeutic use of seaside resorts; includes treatment by sea air, sea voyages, and sea bathing. ... (12 Dec 1998) ...
thalidomide<drug> Sedative drug that when taken between 3rd and 5th week of pregnancy produced a range of malformations of the foetus, in severe cases complete absence of limbs (amelia) or much reduced limb development (phocomelia). A teratogen. ... (18 Nov 1997) ...
thallium<chemistry> A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7. ... Origin: NL …
thallium 201<radiology> Tl-201, half-life: 73 hours (ca. 3 days), radiation: 68-80 keV photons (mercury X-rays), 135 and 167 keV gamma rays, cyclotron produced see: myocardial perfusion imaging ... (12 Dec 1998) ...
thallium heart scan<cardiology, investigation, radiology> A test which involves the introduction of a radioactive tracer into the bloodstream. ... The radioactive tracer is then measured with a special camera and a determination of coronary artery blood flow can be made. ... (27 Sep 1997) ...
thallium poisoningA condition characterised by vomiting, diarrhoea, leg pains, and severe sensorimotor polyneuropathy; about three weeks after poisoning, temporary extensive loss of hair typically occurs; usually occurs after accidental ingestion of a rodenticide. ... (05 Mar 2000) ...
thallium radioisotopesUnstable isotopes of thallium that decay or disintegrate emitting radiation. Tl atoms with atomic weights 198-202, 204, and 206-210 are thallium radioisotopes. ... (12 Dec 1998) ...
thallium stress test<cardiology, investigation> This test is used to assess coronary blood flow before and after a period of strenuous exercise. ... Thallium testing involves the introduction of a radioactive tracer into the bloodstream. The radioactive tracer is then measured with a special camera and a determination of coronary artery blood flow can be made. …
thallogen<botany> One of a large class or division of the vegetable kingdom, which includes those flowerless plants, such as fungi, algae, and lichens, that consist of a thallus only, composed of cellular tissue, or of a congeries of cells, or even of separate cells, and never show a distinction into root, stem, and leaf. ... Origin: Gr. Young shoot or …
thalloid<anatomy> Of or resembling a thallus. ... (09 Oct 1997) ...
thallophyta<botany> A primary division of plant-like organisms including all forms consisting of one-celled and cell aggregates not clearly differentiated into root, stem, and leaf, includes algae, fungi, and lichens. ... (09 Oct 1997) ...
thallosporeAn obsolete term for a reproductive asexual type of spore formed as an integral part of the thallus or mycelium, in contrast to a conidium formed on a specialised hypha. ... Origin: G. Thallos, a green twig, + sporos, seed ... (05 Mar 2000) ...
thallotoxicosisPoisoning by thallium; marked by stomatitis, gastroenteritis, peripheral and retrobulbar neuritis, endocrine disorders, and alopecia. ... Origin: thallium + G. Toxikon, poison, + -osis, condition ... (05 Mar 2000) ...
thallusThe vegetative body of a plant that is not differentiated into organs such as stems and leaves, for example algae, the gametophytes of many liverworts. ... (09 Oct 1997) ...
thanato-Death. ... See: necro-. ... Origin: G. Thanatos, death ... (05 Mar 2000) ...
thanatobiologicRelating to the processes involved in life and death. ... Origin: thanato-+ G. Bios, life, + logos, study ... (05 Mar 2000) ...
thanatognomonicOf fatal prognosis, indicating the approach of death. ... Origin: thanato-+ G. Gnome, a sign ... (05 Mar 2000) ...
thanatography1. A description of one's symptoms and thoughts while dying. ... 2. A treatise on death. ... Origin: thanato-+ G. Graphe, a writing ... (05 Mar 2000) ...
thanatoid1. Resembling death. ... 2. Deadly. ... Origin: thanato-+ G. Eidos, resemblance ... (05 Mar 2000) ...
thanatomania<psychiatry> Illness or death resulting from belief in the efficacy of magic; a phenomenon observed among those primitive societies or illiterate and superstitious people who believe in the power of evil spirits, spells, curses, and individuals over one's bodily processes, with such belief and resulting fear manifesting itself as psychosomati …
thanatophidiaVenomous snakes. ... Origin: thanato-+ G. Ophidion, dim. Of ophis, a serpent ... (05 Mar 2000) ...
thanatophobia<psychology> Morbid fear of death. ... Origin: thanato-+ G. Phobos, fear ... (05 Mar 2000) ...
thanatophoricLeading to death. ... Origin: thanato-+ G. Phoros, bearing ... (05 Mar 2000) ...
thanatophoric dwarfismA lethal dwarfism characterised by micromelia, bowed long bones, enlarged head, flattened vertebral bodies, and muscular hypotonia; lack of pulmonary ventilation causes respiratory difficulties with cyanosis leading to death within the first few hours or days after birth. ... (05 Mar 2000) ...
thanatophoric dysplasiaA severe form of neonatal dwarfism with very short limbs. All cases have died at birth or in the neonatal period. ... (12 Dec 1998) ...
thanatopsySynonym: autopsy. ... Origin: thanato-+ G. Opsis, view ... (05 Mar 2000) ...
thanatosIn psychoanalysis, the death principle, representing all instinctual tendencies toward senescence and death. See also entries under instinct. ... Compare: eros. ... Origin: G. Death ... (05 Mar 2000) ...
Thane, Sir George<person> English anatomist, 1850-1930. ... See: Thane's method. ... (05 Mar 2000) ...
Thane's methodA method for indicating the position of the central sulcus (Rolando's fissure) of the brain; the upper end of the sulcus corresponds to the midpoint of a line drawn from the glabella to the inion. ... (05 Mar 2000) ...
thanksgiving1. The act of rending thanks, or expressing gratitude for favors or mercies. 'Every creature of God is good, and nothing to be refused, if it be received with thanksgiving.' (1 Tim. Iv. 4) 'In the thanksgiving before meat.' (Shak) 'And taught by thee the Church prolongs Her hymns of high thanksgiving still.' (Keble) ... 2. A public acknowledgment or …
thapsigargin<protein> Cell permeable inhibitor of calcium ATPase of endoplasmic reticulum, leads to increase in cytoplasmic calcium ions. Acts independently of InsP3. A tumour promoter. ... (18 Nov 1997) ...
thatch1. Straw, rushes, or the like, used for making or covering the roofs of buildings, or of stacks of hay or grain. ... 2. <botany> A name in the West Indies for several kinds of palm, the leaves of which are used for thatching. Thatch sparrow, the house sparrow. ... Origin: OE. Thak, AS. Oaec a roof; akin to oeccean to cover, D. Dak a roof, dekke …
thaumatin<protein> Protein from the African plant Thaumatococcus daniellii. It tastes 10exp5 times sweeter than sucrose. ... (18 Nov 1997) ...
thaumatrope<optics> An optical instrument or toy for showing the presistence of an impression upon the eyes after the luminous object is withdrawn. ... It consists of a card having on its opposite faces figures of two different objects, or halves of the same object, as a bird and a cage, which, when the card is whirled rapidlz round a diameter by the str …
thaumatropyThe transformation of one form of tissue into another. ... Origin: G. Thauma (thaumat-), a wonder, + trope, a turning ... (05 Mar 2000) ...
Thayer-Martin agarA Mueller-Hinton agar with 5% chocolate sheep blood and antibiotics, used for transport and primary isolation of Neisseria gonorrhoeae and Neisseria meningitides. ... Synonym: Thayer-Martin medium. ... (05 Mar 2000) ...
Thayer-Martin mediumSynonym for Thayer-Martin agar ... A Mueller-Hinton agar with 5% chocolate sheep blood and antibiotics, used for transport and primary isolation of Neisseria gonorrhoeae and Neisseria meningitides. ... Synonym: Thayer-Martin medium. ... (05 Mar 2000) ...
Thayer, J<person> ... See: Thayer-Martin medium, Thayer-Martin agar. ... (05 Mar 2000) ...
