| niter paper | Paper impregnated with potassium nitrate that is ignited to produce fumes inhaled as treatment for asthma. Synonym: potassium nitrate paper, saltpeter paper. Occluding paper, an inked paper or ribbon interposed between natural or artificial teeth to determine tooth contacts. Synonym: articulating paper. (05 Mar 2000) |
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| nitinol filter | A vena cava filter made with a metal that springs into shape when warmed to body heat by the blood after catheter insertion. (05 Mar 2000) |
| niton | Archaic term for radon. (05 Mar 2000) |
| nitracrine | <chemical> Acridine antineoplastic agent used in mammary and ovarian tumours. It inhibits RNA synthesis. Pharmacological action: antineoplastic agent, nucleic acid synthesis inhibitors. Chemical name: 1,3-Propanediamine, N,N-dimethyl-N'-(1-nitro-9-acridinyl)- (12 Dec 1998) |
| nitranilic | <chemistry> Of, pertaining to, or designating, a complex organic acid produced as a white crystalline substance by the action of nitrous acid on hydroquinone. Origin: Nitro- + chloranil + -ic. Source: Websters Dictionary (01 Mar 1998) |
| nitraniline | <chemistry> Any one of a series of nitro derivatives of aniline. In general they are yellow crystalline substances. Origin: Nitro- + aniline. Source: Websters Dictionary (01 Mar 1998) |
| nitratase | <enzyme> Anaerobic bacteria convert nitrate to free nitrogen Registry number: EC 1.7.99.- (26 Jun 1999) |
| nitrate | <chemistry> A salt of nitric acid. Nitrate of silver, a white crystalline salt (AgNO3), used in photography and as a cauterizing agent. Synonym: lunar caustic. Origin: Cf. F. Nitrate. Source: Websters Dictionary (01 Mar 1998) |
| nitrate reductase | <enzyme> Narg, narh, nari, and narj are subunits of membrane-bound nitrate reductase from denitrifying bacteria Registry number: EC 1.7.99.4 Synonym: respiratory nitrate reductase, nasb gene product, narb gene product, niad gene product, narg gene product, narh gene product, nari gene product, narj gene product (26 Jun 1999) |
| nitrate reductases | <enzyme> Registry number: EC 1.- (12 Dec 1998) |
| nitrate respiration | The process of respiration used by some anaerobic organisms, in which nitrate rather than molecular oxygen is used to oxidise organic molecules to obtain energy. (05 Mar 2000) |
| nitrated | 1. <chemistry> Combined, or impregnated, with nitric acid, or some of its compounds. 2. <photography> Prepared with nitrate of silver. Source: Websters Dictionary (01 Mar 1998) |
| nitrates | A group of medications that are made from a chemical with a nitrogen base. Nitrates relax smooth muscle, dilate veins, lower blood pressure and improve blood flow through the coronary arteries. Examples include: nitroglycerin, erythrityl tetranitrate, isosorbide dinitrate, isosorbide mononitrate and pentaerythritol tetranitrate. (27 Sep 1997) |
| nitratine | <chemical> A mineral occurring in transparent crystals, usually of a white, sometimes of a reddish gray, or lemon-yellow, colour; native sodium nitrate. It is used in making nitric acid and for manure. Synonym: soda niter. Source: Websters Dictionary (01 Mar 1998) |
| nitrazepam | <chemical> 1,3-dihydro-7-nitro-5-phenyl-2h-1,4-benzodiazepin-2-one. A benzodiazepine derivative used as an anticonvulsant and hypnotic. Pharmacological action: anti-anxiety agents, anticonvulsants, gaba modulators, sedatives, nonbarbiturate. Chemical name: 2H-1,4-Benzodiazepin-2-one, 1,3-dihydro-7-nitro-5-phenyl- (12 Dec 1998) |