| cyanidenon | <chemistry> A yellow dyestuff obtained from the foliage of the dyer's broom (Reseda luteola). Origin: From NL. Reseda luteola, fr. L. Luteolus yellowish, fr. Luteus: cf. F. Luteoline. See Luteous. Source: Websters Dictionary (01 Mar 1998) |
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| cyanides | Inorganic salts of hydrogen cyanide containing the -cn radical. The concept also includes isocyanides. It is distinguished from nitriles, which denotes organic compounds containing the -cn radical. (12 Dec 1998) |
| cyanidol | <chemical> 3,3',4',5,7-flavanpentol. Extracted from uncaria gambier, acacia catechu and other plants; it stabilises collagen and is therefore used in tanning and dyeing; it prevents capillary fragility and abnormal permeability, but was formerly used as an antidiarrhoeal. Synonym: cachou; cashoo; cutch. Chemical name: 2H-1-Benzopyran-3,5,7-triol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-, (2R-trans)- (12 Dec 1998) |
| cyanine green G base | <chemical> Pharmacological action: dye Synonym: d.c. Green no. 6, 1,4-di-4-toluidinoanthraquinone, solvent green 3 (26 Jun 1999) |
| cyanmethemoglobin | A relatively nontoxic compound of cyanide with methemoglobin, which is formed when methylene blue is administered in cases of cyanide poisoning. Synonym: cyanide methemoglobin. (05 Mar 2000) |
| cyano- | Cyan- 1. Combining form meaning blue. 2. Chemical prefix frequently used in naming compounds that contain the cyanide group, CN. Origin: G. Kyanos, a dark blue substance (05 Mar 2000) |
| cyanoacrylates | A group of compounds having the general formula ch2=c(cn)-coor; it polymerises on contact with moisture; used as tissue adhesive; higher homologs have haemostatic and antibacterial properties. (12 Dec 1998) |
| Cyanobacteria | <organism> Modern term for the blue green algae, prokaryotic cells that use chlorophyll on intracytoplasmic membranes for photosynthesis. The blue green colour is due to the presence of phycobiliproteins. Found as single cells, colonies or simple filaments. In Anabaena, in which the cells are arranged as a filament, heterocysts capable of nitrogen fixation occur at regular intervals. According to the endosymbiont theory Cyanobacteria are the progenitors of chloroplasts. (18 Nov 1997) |
| cyanobacterium-like bodies | A Cryptosporidium-like genus of coccidian parasites reported from millipedes, reptiles, insectivores, and a rodent species. Cyclospora is characterised by acid-fast oocysts with two sporocysts, each with two sporozoites. Cyclospora species is an undescribed but distinct species of Cyclospora that is implicated as the cause of a widespread, prolonged but self-limited human diarrhoea in patients in North, Central, and South America; Caribbean countries; Southeast Asia; and eastern Europe previously reported as caused by cyanobacterium-like bodies. Synonym: cyanobacterium-like bodies. (05 Mar 2000) |
| cyanochroic | Cyanochrous Synonym: cyanotic. Origin: cyano-+ G. Chroia, colour (05 Mar 2000) |
| cyanocobalamin | Member of the water soluble B vitamin group, important in the proper function of the nervous system and important in proper carbohydrate, protein and fat metabolism. (27 Sep 1997) |
| cyanocobalamin beta-ligand transferase | <enzyme> Cytosolic enzyme utilizing fad, NADPH and reduced glutathione; forms glutathionylcobalamin from cyanocobalamin Registry number: EC 2.5.1.- Synonym: ccbl transferase (26 Jun 1999) |
| cyanogen | A compound of two cyano radicals, NC-CN; its highly toxic compounds (general formula X-CN, where X is a halogen) are used in chemical syntheses and as tissue preservatives. Synonym: ethanedinitrile. Cyanogen chloride, CNCl;a highly volatile liquid; a systemic poison used as a warning agent in fumigation with hydrogen cyanide. (05 Mar 2000) |
| cyanogen bromide | <chemical> Agent that cleaves peptide bonds at methionine residues. The peptide fragments so generated can then, for example: be tested to locate particular activities. (18 Nov 1997) |
| cyanogenic | Capable of producing hydrocyanic acid; said of plants such as sorghum, Johnson grass, arrowgrass, and wild cherry which may cause cyanide poisoning in herbivorous animals. (05 Mar 2000) |