| azo dye | <chemistry> Dyes that contain the N=N linkage. They are easily prepared from diazo compounds. (18 Nov 1997) |
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| azo dyes | Dye's in which the azo group is the chromophore and joins benzene or naphthalene rings; they include a large number of biologic stains, such as Congo red and oil red O; also used clinically to promote epithelial growth in the treatment of ulcers, burns, and other wounds; many have anticoagulant action. (05 Mar 2000) |
| azo itch | Itching that occurs among workers in azo dyes. (05 Mar 2000) |
| azo- | <chemistry, prefix> A combining form of azote. Applied loosely to compounds having nitrogen variously combined, as in cyanides, nitrates, etc. Now especially applied to compounds containing a two atom nitrogen group uniting two hydrocarbon radicals, as in azobenzene, azobenzoic, etc. These compounds furnish many artificial dyes. See Diazo-. See: Azote. (29 Oct 1998) |
| azobenzene | <chemistry> A substance (C6H5.N2.C6H5) derived from nitrobenzene, forming orange red crystals which are easily fusible. (11 Mar 1998) |
| azobilirubin | The red-violet pigment formed by the condensation of diazotised sulfanilic acid with bilirubin in the van den Bergh reaction. (05 Mar 2000) |
| azocarmine | A series of red acid azo dyes used in preparing tissue stains, useful in Heidenhain's azan stain. (05 Mar 2000) |
| azocarmine dyes | Dye's giving a dark purplish red colour as histologic stains. (05 Mar 2000) |
| azocoll proteinase | <enzyme> Azocoll is used as a non-specific substrate for proteolytic assays Registry number: EC 3.4.- (26 Jun 1999) |
| azoic | Destitute of any vestige of organic life, or at least of animal life; anterior to the existence of animal life; formed when there was no animal life on the globe; as, the azoic. Rocks. <geology> Azoic age, the age preceding the existence of animal life, or anterior to the paleozoic tome. Azoic is also used as a noun, age being understood. See Archaean, and Eozoic. Origin: Gr. Priv. + life, from to live. Source: Websters Dictionary (01 Mar 1998) |
| azole | Divinylenimine;a heterocyclic compound found in many biologically important substances. Synonym: azole, imidole. (05 Mar 2000) |
| azoleic | <chemistry> Pertaining to an acid produced by treating oleic with nitric acid. (11 Mar 1998) |
| azolitmin | A purplish red colouring matter obtained from natural litmus or synthesised by oxidizing orcinol in the presence of ammonia, lime, and potash; used as a broad indicator of pH (red at 4.5, blue at 8.3). (05 Mar 2000) |
| azoospermia | <gynaecology, urology> The absence of spermatozoa in the semen or failure of formation of spermatozoa. (18 Nov 1997) |
| azophloxin | An azo dye, C18H13N3S2Na2, used in light and fluorescence microscopy as a real acid counterstain. Synonym: azophloxin. (05 Mar 2000) |
| (7,7-azo-3,12-dihydroxy-5-cholan-24-oyl)-2-aminoethanesulfonic acid | Photolabile bile acid derivative Pharmacological action: affinity labels Chemical name: ethanesulfonic acid, 2-(((3alpha,5beta,12alpha)-7-azi-3,12-dihydroxy-24-oxocholan-24-yl)amino)-, monosodium salt Synonym: 7,7-azo-tc, 7-adtc (26 Jun 1999) |
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