| tetravalence | <chemistry> The quality or state of being tetravalent; quadrivalence. Source: Websters Dictionary (01 Mar 1998) |
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| tetravalent | <chemistry> Having a valence of four; tetratomic; quadrivalent. Origin: Tetra- + L. Valens, -entis, p.pr. Source: Websters Dictionary (01 Mar 1998) |
| tetraxile | <zoology> Having four branches diverging at right angles; said of certain spicules of sponges. Origin: Tetra- + axile. Source: Websters Dictionary (01 Mar 1998) |
| 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) |
| tetrazole | The compound CN4H2 with the structure of tetrazolium. (05 Mar 2000) |
| tetrazolium | Any 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 dehydrogenases; used in haematology for staining of neutrophils to help indicate the presence of bacterial infections. (05 Mar 2000) |
| 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) |
| tetrazone | <chemistry> Any one of a certain series of basic compounds containing a chain of four nitrogen atoms; for example, ethyl tetrazone, (C2H5)2N.N2.N(C2H5)2, a colourless liquid having an odour of leeks. Source: Websters Dictionary (01 Mar 1998) |
| tetrazonium salts | Diazonium salt's that contain three azo groups. (05 Mar 2000) |
| tetrinic | <chemistry> Of, pertaining to, or designating, a complex ketonic acid, C5H6O3, obtained as a white crystalline substance; so called because once supposed to contain a peculiar radical of four carbon atoms. Synonym: acetyl-acrylic acid. See: Tetra-. Source: Websters Dictionary (01 Mar 1998) |
| 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 similar species. Origin: Tetra- + Gr, tooth. Source: Websters Dictionary (01 Mar 1998) |
| tetrodont | <zoology> Of or pertaining to the tetrodons. A tetrodon. Alternative forms: tetradont, and tetraodont. Source: Websters Dictionary (01 Mar 1998) |
| 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) |
| tetrol | <chemistry> A hypothetical hydrocarbon, C4H4, analogous to benzene; so called from the four carbon atoms in the molecule. Tetrol phenol, furfuran. Origin: Tetra- + benzol. Source: Websters Dictionary (01 Mar 1998) |
| tetrolic | <chemistry> Of, pertaining to, or designating, an acid, C3H3.CO2H, of the acetylene series, homologous with propiolic acid, obtained as a white crystalline substance. Source: Websters Dictionary (01 Mar 1998) |
| tetrachloroethylene |
Chemical name of perchloroethylene (see under that name).
출처: www.eurochlor.org/tools/glossary/glossary.htm
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| tetraploid |
Genetic aberration wherein the plant has twice as many chromosome sets as normal, often resulting in very vigorous, large plants and flowers.
출처: www.herbs2000.com/flowers/o_glossary.htm
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| tetrafilcon A |
one of the most durable lens materials on the market, it produces a thinner, more comfortable lens with exceptional tear resistance. It also resists build up of protein deposits on the lens surface and requires little or no enzymatic cleanings.
출처: www.eyesinternational.com/eyecare/contacts_termino...
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| tetrodotoxin |
(TTX) A potent neurotoxin from the Japanese puffer fish. It binds to the sodium channel, blocking the passage of action potentials.
출처: www.painceptor.com/page.asp
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| tetrablastic |
Having four germinal layers: the ectoderm, endoderm, and two mesodermic layers.
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