| arsenical | 1. <pharmacology> A drug or agent, the effect of which depends on its arsenic content. 2. Denoting or containing arsenic. (05 Mar 2000) |
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| arsenical keratosis | Multiple keratoses, most commonly of the palms and soles but also of the fingers and proximal portions of the extremities, resulting from long-term arsenic ingestion; they resemble Bowen's disease microscopically and may become malignant. (05 Mar 2000) |
| arsenical polyneuropathy | An axon loss polyneuropathy that results from subacute or chronic arsenic poisoning; almost always preceded by gastrointestinal symptoms; one of the heavy metal neuropathies. (05 Mar 2000) |
| arsenical tremor | A tremor caused by chronic poisoning by arsenic. (05 Mar 2000) |
| arsenicalism | Chronic arsenical poisoning. Synonym: arsenicalism. (05 Mar 2000) |
| arsenicals | <chemical> Inorganic or organic compounds that contain arsenic. Pharmacological action: sulfhydryl reagents. (12 Dec 1998) |
| arsenicism | <medicine> A diseased condition produced by slow poisoning with arsenic. Source: Websters Dictionary (01 Mar 1998) |
| arsenide | <chemistry> A compound of arsenic with a metal, or positive element or radical; formerly called arseniuret. Source: Websters Dictionary (01 Mar 1998) |
| arsenious | 1. Pertaining to, consisting of, or containing, arsenic; as, arsenious powder or glass. 2. <chemistry> Pertaining to, or derived from, arsenic, when having an equivalence next lower than the highest; as, arsenious acid. Origin: Cf. F. Arsenieux. Source: Websters Dictionary (01 Mar 1998) |
| arsenite | <chemistry> A salt formed by the union of arsenious acid with a base. Origin: Cf. F. Arsenite. Source: Websters Dictionary (01 Mar 1998) |
| arsenite oxidase | <enzyme> Two n-terminal amino acid iron-sulfur protein containing molybdenum; detoxifies arsenite to arsenate Registry number: EC 1.16.- (26 Jun 1999) |
| arsenite(antimonate)-stimulated ATPase | <enzyme> Anion pump with 2 polypeptide components (arsa and arsb); arsa is the catalytic subunit of an oxyanion-translocating atpase; arsb protein has been localised in the inner membrane of E coli; arsc protein required for arsenate resistance; reduces arsenate to arsenite Registry number: EC 3.6.1.- Synonym: arsa protein, arsb protein, ars gene product, arsc protein, anion-translocating atpase, arsenical resistance pump, oxyanion pump, arsenate reductase (26 Jun 1999) |
| arsenites | Inorganic salts or oganic esters of arsenious acid. (12 Dec 1998) |
| arsenium | 1. <chemistry> One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray colour and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356 deg Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenticum of the ancients. The element and its compounds are active poisons. Specific gravity from 5.7 to 5.9. Atomic weight. Symbol As. 2. Arsenious oxide or arsenious anhydride; called also arsenious acid, white arsenic, and ratsbane. <chemistry> Pertaining to, or derived from, arsenic; said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid. Origin: L. Arsenicum, Gr, yellow orpiment, perh. Fr. Or better Attic masculine, male, on account of its strength, or fr. Per. Zernikh: cf. F. Arsenic. Source: Websters Dictionary (01 Mar 1998) |
| arseniuret | <chemistry> See Arsenide. Source: Websters Dictionary (01 Mar 1998) |