| tetraethyllead | Pb(C2H5)4; tetraethylplumbane;an anti-knock compound added to motor fuel; has a toxic action causing anorexia, nausea, vomiting, diarrhoea, tremors, muscular weakness, insomnia, irritability, nervousness, and anxiety; death may occur. Synonym: lead tetraethyl. (05 Mar 2000) Previous: tetraethylammonium, tetraethylammonium chloride, tetraethylammonium ionNext: tetraethyl lead, tetraethylmonothionopyrophosphatetetraethyl lead <chemical> Tetraethylplumbane. A highly toxic compound used as a gasoline additive. It causes acute toxic psychosis or chronic poisoning if inhaled or absorbed through the skin. Chemical name: Plumbane, tetraethyl- (12 Dec 1998) |
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| tetraethylmonothionopyrophosphate | An anticholinesterase agent used in the treatment of glaucoma. (05 Mar 2000) |
| tetraethylthiuram disulfide | <chemical> A carbamate derivative used as an alcohol deterrent. It is a relatively nontoxic substance when administered alone, but markedly alters the intermediary metabolism of alcohol. When alcohol is ingested after administration of disulfiram, blood acetaldehyde concentrations are increased, followed by flushing, systemic vasodilation, respiratory difficulties, nausea, hypotension, and other symptoms (acetaldehyde syndrome). The intensity and duration of symptoms vary greatly from individual to individual. Pharmacological action: alcohol deterrents. Chemical name: Thioperoxydicarbonic diamide (((H2N)C(S))2S2), tetraethyl- (12 Dec 1998) |
| tetragastrin | <chemical> L-tryptophyl-l-methionyl-l-aspartyl-l-phenylalaninamide. The c-terminal tetrapeptide of gastrin. It is the smallest peptide fragment of gastrin which has the same physiological and pharmacological activity as gastrin. Chemical name: L-Phenylalaninamide, L-tryptophyl-L-methionyl-L-alpha-aspartyl- (12 Dec 1998) |
| tetraglycine hydroperiodide | (NH2CH2COOH)4HI-11/4I2;dissolves in water to the extent of 380 g per liter; used for the emergency disinfection of drinking water in amounts to yield 8 p.p.m. Of active iodine. (05 Mar 2000) |
| tetragon | 1. <geometry> A plane figure having four sides and angles; a quadrangle, as a square, a rhombus, etc. 2. <astronomy> An aspect of two planets with regard to the earth when they are distant from each other ninety degrees, or the fourth of a circle. Origin: L. Tetragonum, Gr.; (see Tetra-) + corner, angle: cf. F. Tetragone. Source: Websters Dictionary (01 Mar 1998) |
| tetragonal | 1. <geometry> Of or pertaining to a tetragon; having four angles or sides; thus, the square, the parallelogram, the rhombus, and the trapezium are tetragonal fingers. 2. <botany> Having four prominent longitudinal angles. 3. <chemistry> Designating, or belonging to, a certain system of crystallization; dimetric. See Tetragonal system, under Crystallization. Source: Websters Dictionary (01 Mar 1998) |
| tetragonus | An obsolete term for platysma muscle. (05 Mar 2000) |
| tetragynia | <botany> A Linnaean order of plants having four styles. Origin: NL, fr. Gr. Tetra- (see Tetra-) + gynh = a woman, female. Source: Websters Dictionary (01 Mar 1998) |
| tetragynous | <botany> Belonging to the order Tetragynia; having four styles. Source: Websters Dictionary (01 Mar 1998) |
| tetrahedral | 1. Having, or composed of, four sides. 2. <chemistry> Having the form of the regular tetrahedron. Pertaining or related to a tetrahedron, or to the system of hemihedral forms to which the tetrahedron belongs. <geometry> Tetrahedral angle, a solid angle bounded or inclosed by four plane angles. See: Tetrahedron. Source: Websters Dictionary (01 Mar 1998) |
| tetrahedrite | <chemical> A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Synonym: gray copper ore, fahlore, and panabase. Origin: So called because the crystals of the species are commonly tetrahedrons. Source: Websters Dictionary (01 Mar 1998) |
| tetrahedron | <geometry> A solid figure inclosed or bounded by four triangles. In crystallography, the regular tetrahedron is regarded as the hemihedral form of the regular octahedron. <geometry> Regular tetrahedron, a solid bounded by four equal equilateral triangles; one of the five regular solids. Origin: Tetra- + Gr. Seat, base, fr. To sit. Source: Websters Dictionary (01 Mar 1998) |
| tetrahexahedral | <chemistry> Pertaining to a tetrahexahedron. Source: Websters Dictionary (01 Mar 1998) |
| tetrahexahedron | <chemistry> A solid in the isometric system, bounded by twenty-four equal triangular faces, four corresponding to each face of the cube. Origin: Tetra- + hexahedron. Source: Websters Dictionary (01 Mar 1998) |
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Synonyms : NSC-112907, NSC 112907, NSC112907
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| tetrahedron chest |
a chest that suggests a solid with four sides, each an equilateral triangle, the chest projecting in a peak between the nipples.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| tetra- |
TErrestrial Trunked RAdio (TETRA) is a specialist Professional Mobile Radio and walkie talkie standard used by police, ambulance and military. ...
출처: en.wikipedia.org/wiki/TETRA
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| tetrahydrocannabinol |
Tetrahydrocannabinol, also known as THC, Δ9-THC, Δ9-tetrahydrocannabinol(delta-9-tetrahydrocannabinol), Δ1-tetrahydrocannabinol (using an older numbering scheme), or dronabinol, is the main psychoactive substance found in the hemp plant Cannabis sativa. It was isolated by Raphael Mechoulam and Yechiel Gaoni from the Weizmann Institute in Rehovot, Israel in 1964. In pure form it is glassy solid when cold and becomes viscous and sticky if warmed. ...
출처: en.wikipedia.org/wiki/Tetrahydrocannabinol
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| tetralogy of Fallot |
In medicine, the tetralogy of Fallot (described by Etienne Fallot, 1850 - 1911, Marseille) is a significant and complex congenital heart defect, involving four different heart malformations:# A ventricular septal defect (VSD), a hole between the two bottom chambers (ventricles) of the heart. # Right ventricular outflow tract obstruction, a narrowing at or just below the pulmonary valve. # The aorta is positioned over the ventricular septal defect instead of in the left ventricle. ...
출처: en.wikipedia.org/wiki/Tetralogy_of_Fallot
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| tetrodotoxin |
Tetrodotoxin (anhydrotetrodotoxin 4-epitetrodotoxin, tetrodonic acid, TTX) is a potent neurotoxin, which blocks the nerve function in nerves by binding to the pore of voltage-gated sodium channel in nerve cell membranes. The binding site of this toxin is located at the pore opening the voltage-gated Na+ channel. Its name derives from Tetraodontidae, the scientific family name of the puffer fishes, some species of which carry the toxin. ...
출처: en.wikipedia.org/wiki/Tetrodotoxin
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| tetr | any of a variety of carbohydrates that yield four monosaccharide molecules on complete hydrolysis |
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| tetr | a sodium salt of pyrophosphoric acid used as a builder in soaps and detergents |
| tetr | a sporangium containing four asexual spores |
| tetr | one of the four asexual spores produced within a sporangium |
| tetr | (chemistry) haveing a valence of four |
| tetr | a thermionic tube having four electrodes |
| tetr | any monosaccharide sugar containing four atoms of carbon per molecule |