| dinaphthyl | <chemistry> A colourless, crystalline hydrocarbon, C20H14, obtained from naphthylene, and consisting of a doubled naphthylene radical. Origin: Pref. Di- + naphthylene. Source: Websters Dictionary (01 Mar 1998) |
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| dineric | Denoting the interface between two mutually immiscible liquids (e.g., oil and water) in the same container. Origin: di-+ G. Neron, water (05 Mar 2000) |
| dingo | <zoology> A wild dog found in Australia, but supposed to have introduced at a very early period. It has a wolflike face, bushy tail, and a reddish brown colour. Source: Websters Dictionary (01 Mar 1998) |
| dinichthys | <paleontology> A genus of large extinct Devonian ganoid fishes. In some parts of Ohio remains of the Dinichthys are abundant, indicating animals twenty feet in length. Origin: NL, fr. Gr. Terrible + fish. Source: Websters Dictionary (01 Mar 1998) |
| dinitolmide | <chemical> 3,5-dinitro-o-toluamide. A coccidiostat for poultry. Pharmacological action: coccidiostats. Chemical name: Benzamide, 2-methyl-3,5-dinitro- (12 Dec 1998) |
| dinitrobenzenes | Benzene derivatives which are substituted with two nitro groups in the ortho, meta or para positions. (12 Dec 1998) |
| dinitrocellulose | <chemistry> A substance resembling gun cotton in composition and properties, but distinct in that it is more highly nitrified and is soluble in alcohol, ether, etc. Synonym: pyroxyle. Source: Websters Dictionary (01 Mar 1998) |
| dinitrochlorobenzene | <chemical> 1-chloro-2,4-dinitrobenzene. A skin irritant that may cause dermatitis of both primary and allergic types. Contact sensitization with dncb has been used as a measure of cellular immunity. Dncb is also used as a reagent for the detection and determination of pyridine compounds. Pharmacological action: indicators and reagents, irritants. Chemical name: Benzene, 1-chloro-2,4-dinitro- (12 Dec 1998) |
| dinitrofluorobenzene | <chemical> Irritants and reagents for labeling terminal amino acid groups. Chemical name: Benzene, 1-fluoro-2,4-dinitro- (12 Dec 1998) |
| dinitrogen monoxide | <chemical> Nitrogen oxide (n2o). A colourless, odourless gas that is used as an anaesthetic and analgesic. High concentrations cause a narcotic effect and may replace oxygen, causing death by asphyxia. It is also used as a food aerosol in the preparation of whipping cream. Pharmacological action: aerosol propellants, analgesics, non-narcotic, anaesthetics, inhalation. Chemical name: Nitrogen oxide (N2O) (12 Dec 1998) |
| dinitrogenase reductase | A non-haem iron-sulfur protein isolated from clostridium pasteurianum and other bacteria. It is a component of nitrogenase along with molybdoferredoxin and is active in nitrogen fixation. (12 Dec 1998) |
| dinitrogenase reductase ADP-ribosyltransferase | <enzyme> Catalyses the ADP-ribosylation and concomitant inactivation of dinitrogenase reductase in rhodospirillum rubrum; encoded by drat gene of azospirillum brasilense Registry number: EC 2.4.2.- Synonym: dratransferase (26 Jun 1999) |
| dinitrophenols | <chemical> Organic compounds that contain two nitro groups attached to a phenol. Pharmacological action: fungicides, industrial, uncoupling agents. (12 Dec 1998) |
| dinitrophenylhydrazine test | A screening test for maple syrup urine disease; the addition of 2,4-dinitrophenylhydrazine in HCl to urine gives a chalky white precipitate in the presence of ketoacids. (05 Mar 2000) |
| dinitropyrene nitroreductase | <enzyme> Rat liver cytosol enzymatic activity found in NADPH-quinone oxidoreductase (EC 1.6.99.2) activates 1,3-, 1,6- and 1,8-dinitropyrene to carcinogenic and mutagenic cpds Registry number: EC 1.6.99.- (26 Jun 1999) |