| arsacetin | P-Acetamidobenzenearsonic acid;formerly used as an antisyphilitic agent. (05 Mar 2000) |
|---|---|
| arsanilic acid | An arsenical which has been used as a feed additive for enteric conditions in pigs and poultry. It causes blindness and is ototoxic and nephrotoxic in animals. (4-aminophenyl)-arsonic acid monosodium salt. (12 Dec 1998) |
| arse | <biology> The buttocks, or hind part of an animal; the posteriors; the fundament; the bottom. Origin: AS. Ears; aers; akin to OHG. Ars. G. Arsch, D. Aars, Sw. Ars, Dan. Arts, Gr. (cf. Tail). Source: Websters Dictionary (01 Mar 1998) |
| arsenamide | <chemical> Proposed chemotherapeutic agent against filaria and trichomonas. Pharmacological action: filaricides. Chemical name: Acetic acid, 2,2'-(((4-(aminocarbonyl)phenyl)arsinidene)bis(thio))bis- (12 Dec 1998) |
| arsenate | <chemistry> A salt of arsenic acid. Source: Websters Dictionary (01 Mar 1998) |
| arsenates | <chemistry> Inorganic or organic salts and esters of arsenic acid. (12 Dec 1998) |
| arsenazo III | <chemical> Metallochrome indicator that changes colour when complexed to the calcium ion under physiological conditions. It is used to measure local calcium ion concentrations in vivo. Pharmacological action: dyes, indicators and reagents. Chemical name: 2,7-Naphthalenedisulfonic acid, 3,6-bis((2-arsonophenyl)azo)-4,5-dihydroxy- (12 Dec 1998) |
| arseniasis | Chronic arsenical poisoning. Synonym: arsenicalism. (05 Mar 2000) |
| arsenic | 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) |
| arsenic acid | <chemical> The hydrate of arsenic oxide or arsenic pentoxide which forms arsenates with certain bases. (05 Mar 2000) |
| arsenic pigmentation | Generalised but spotty increased melanin pigmentation of the skin in chronic arsenic poisoning. (05 Mar 2000) |
| arsenic poisoning | A severe poisoning that occurs after the exposure (ingested or inhaled). Signs and symptoms include: nausea, vomiting, diarrhoea, rapid heart rate, apprehension and difficulty breathing. (27 Sep 1997) |
| arsenic trihydride | <chemistry> A compound of arsenic and hydrogen, AsH3, a colourless and exceedingly poisonous gas, having and odour like garlic; arseniureted hydrogen. Origin: From Arsenic. Source: Websters Dictionary (01 Mar 1998) |
| arsenic trioxide | As2O3;dissolves in water to give arsenous acid, H3AsO3; used in the treatment of skin diseases and malaria, and as a tonic; also used externally as a caustic. Synonym: arsenous oxide, white arsenic. (05 Mar 2000) |
| arsenic-fast | Resistant to the poisonous action of arsenic; denoting especially spirochetes and other protozoan parasites, which acquire resistance after repeated administration of the drug. (05 Mar 2000) |