| nitrogen oxides | Inorganic oxides that contain nitrogen. (12 Dec 1998) |
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| nitrogen partition | Determination of the distribution of nitrogen in the urine among the various constituents. Synonym: nitrogen distribution. (05 Mar 2000) |
| nitrogen radioisotopes | Unstable isotopes of nitrogen that decay or disintegrate emitting radiation. N atoms with atomic weights 12, 13, 16, 17, and 18 are radioactive nitrogen isotopes. (12 Dec 1998) |
| nitrogen-13 | A cyclotron-produced, positron-emitting radioisotope of nitrogen with a half-life of 9.97 minutes; used in protein metabolism studies and in positron-emission tomography. (05 Mar 2000) |
| nitrogen-14 | The common nitrogen isotope, making up 99.63% of natural nitrogen. (05 Mar 2000) |
| nitrogen-15 | The less common stable nitrogen isotope, making up 0.37% of natural nitrogen. Synonym: heavy nitrogen. (05 Mar 2000) |
| nitrogenase | <enzyme> Nitrogenase is a member of a family of enzymes found in nitrogen fixing bacteria that reduce nitrogen to ammonia (also ethylene to acetylene). (18 Nov 1997) |
| nitrogenase complex | <biochemistry> A system of enzymes used by nitrogen-fixing ATP is present. (09 Oct 1997) |
| nitrogenase reductase | <enzyme> Fe protein component of mo-fe protein nitrogenase in rhodospirillum rubrum; part of the molybdenum nitrogenase which is nifhdk Registry number: EC 1.18.2.- Synonym: nitrogenase iron protein, nitrogenase fe protein, fe protein, nitrogenase, nifh protein, nifh gene product (26 Jun 1999) |
| nitrogenize | <chemistry> To combine, or impregnate, with nitrogen or its compounds. Origin: Nitrogenised; Nitrogenizing. Source: Websters Dictionary (01 Mar 1998) |
| nitrogenous | <chemistry> Of, pertaining to, or resembling, nitrogen; as, a nitrogenous principle; nitrogenous compounds. Nitrogenous foods. See Note under Food. Source: Websters Dictionary (01 Mar 1998) |
| nitrogenous base | <biochemistry> A nitrogen-containing molecule having the chemical properties of a base. (09 Oct 1997) |
| nitrogenous group transferases | <enzyme> Enzymes that catalyze the transfer of nitrogenous groups, primarily amino groups, from a donor, generally an amino acid, to an acceptor, usually a 2-oxoacid. Registry number: EC 2.6 (12 Dec 1998) |
| nitroglycerin | <chemistry> A liquid appearing like a heavy oil, colourless or yellowish, and consisting of a mixture of several glycerin salts of nitric acid, and hence more properly called glycerin nitrate. It is made by the action of nitric acid on glycerin in the presence of sulphuric acid. It is extremely unstable and terribly explosive. A very dilute solution is used in medicine as a neurotic under the name of glonion. A great number of explosive compounds have been produced by mixing nitroglycerin with different substances; as, dynamite, or giant powder, nitroglycerin mixed with siliceous earth; lithofracteur, nitroglycerin with gunpowder, or with sawdust and nitrate of sodium or barium; Colonia powder, gunpowder with nitroglycerin; dualin, nitroglycerin with sawdust, or with sawdust and nitrate of potassium and some other substances; lignose, wood fibre and nitroglycerin. Pharmacologic action: Relaxes smooth muscle - dilates veins, dilates coronary arteries, reduces left ventricular filling pressure, lowers systemic vascular resistance, decreases myocardial oxygen demand. Uses: Treat angina pectoris. Dose: One tablet (0.3 to 0.4 mg) sublingual, may repeat twice at 5 minute intervals Intravenous infusion: 0.5 - 2 mcg/kg per min. Potential complications: May cause hypotension, especially if hypovolemic; headache is common. Alternative forms: nitroglycerine. Origin: Nitro- + glycerinn. (17 Mar 2000) |
| nitroglycerin reductase | <enzyme> Pseudomonas fmn-containing enzyme that catalyses NADPH-dependent denitration of nitroglycerin, yielding nitrite Registry number: EC 1.7.99.- (26 Jun 1999) |
Synonyms :
Synonyms : Furadantine, Furadoine, Furadonine, Furantoin, Macrodantin, Nitrofurantoin Sodium Salt, Nitrofurantoin, Monohydrate, Monohydrate Nitrofurantoin, Sodium Salt, Nitrofurantoin
Synonyms : Furacilin, Furacillin, Furacin, Nitrofurazone, Calcium (2:1) Salt
Synonyms :
Synonyms : Compounds, Nitrogen
| nitroglycerin |
a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a vasodilator (trade names Nitrospan and Nitrostat)
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| Nitrosomonas |
ellipsoidal soil bacteria
출처: wordnet.princeton.edu/perl/webwn
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| nitrous |
azotic: of or containing nitrogen; "nitric acid"
출처: wordnet.princeton.edu/perl/webwn
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| nitrous acid |
an unstable inorganic acid known only in solution and as nitrite salts
출처: wordnet.princeton.edu/perl/webwn
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| nitrous oxide |
inhalation anesthetic used as an anesthetic in dentistry and surgery
출처: wordnet.princeton.edu/perl/webwn
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| nit | (of especially persons) lacking sense or understanding or judgment |
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