| nickeline | 1. <chemistry> An alloy of nickel, a variety of German silver. 2. <chemical> Niccolite. Source: Websters Dictionary (01 Mar 1998) |
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| nickeloplasmin | A nickel-containing protein found in human sera. (05 Mar 2000) |
| nickelous | <chemistry> Of, pertaining to, or designating, those compounds of nickel in which, as contrasted with the nickelic compounds, the metal has a lower valence; as, nickelous oxide. Source: Websters Dictionary (01 Mar 1998) |
| nicker | 1. One of the night brawlers of London formerly noted for breaking windows with half-pence. 2. The cutting lip which projects downward at the edge of a boring bit and cuts a circular groove in the wood to limit the size of the hole that is bored. Origin: From Nick, v.t. Source: Websters Dictionary (01 Mar 1998) |
| nicker nut | A rounded seed, rather smaller than a nutmeg, having a hard smooth shell, and a yellowish or bluish colour. The seeds grow in the prickly pods of tropical, woody climbers of the genus Caesalpinia. C. Bonduc has yellowish seeds; C.Bonducella, bluish gray. [Spelt also neckar nut, nickar nut. Source: Websters Dictionary (01 Mar 1998) |
| nicker tree | <botany> The plant producing nicker nuts. Alternative forms: neckar tree and nickar tree. Source: Websters Dictionary (01 Mar 1998) |
| Nickerson-Kveim test | <radiology> Intradermal injection, diagnostic for sarcoidosis (12 Dec 1998) |
| nicking | <molecular biology> The production of breaks in a single strand of double-stranded DNA. Such nicks may be produced by the endonuclease DNase I. (14 Nov 1997) |
| nickle | <zoology> The European woodpecker, or yaffle. Synonym: nicker pecker. Source: Websters Dictionary (01 Mar 1998) |
| niclofolan | <chemical> 5,5'-dichloro-3,3'-dinitrobiphenyl-2,2'-diol. Proposed fasciolacide. Synonym: dertil; bilevon; bay 9015. Chemical name: (1,1'-Biphenyl)-2,2'-diol, 5,5'-dichloro-3,3'-dinitro- (12 Dec 1998) |
| niclosamide | <chemical> An antihelmintic that is active against most tapeworms. Pharmacological action: anticestodal agents, antinematodal agent, molluscacides. Chemical name: Benzamide, 5-chloro-N-(2-chloro-4-nitrophenyl)-2-hydroxy- (12 Dec 1998) |
| nicofuranose | Fructose 1,3,4,6-tetranicotinate;a peripheral vasodilator. (05 Mar 2000) |
| Nicol | William, Scottish physicist, 1768-1851. See: Nicol prism. (05 Mar 2000) |
| Nicol prism | <physics> A prism, used for polarizing or analysing light, made by cementing together, with Canada balsam, two pieces of calcite in such a way that the extraordinary ray from the first piece passes through the second piece while the ordinary ray is reflected to the side into an absorbing layer of black paint. When two Nicol prisms are crossed, therefore, no light passes through. A polarizing prism made of two pieces of calcite specially cut, ground, polished and cemented. A transmitted beam splits into two polarized components, one of which is refracted into and absorbed by the asphalt mount. The remaining polarized beam is transmitted. Modifications of this prism are common. The Nicol prism (nicol) has generally been superseded by a polarizing film such as Polaroid. See: polars, polarizer, analyser. (05 Aug 1998) |
| Nicolas | Joseph, French physician, *1868. See: Nicolas-Favre disease. (05 Mar 2000) |