| cyanohydrins | R-CHOH-CN;addition compounds of HCN and aldehydes. Synonym: cyanalcohols. (05 Mar 2000) |
|---|---|
| cyanoketone | <chemical> 2 alpha-cyano-17 beta-hydroxy-4,4',17 alpha-trimethylandrost-5-ene-3-one. An androstenolone-nitrile compound with steroidogenesis-blocking activity. Chemical name: Androst-5-ene-2-carbonitrile, 17-hydroxy-4,4,17-trimethyl-3-oxo-, (2alpha,17beta)- (12 Dec 1998) |
| cyanophil | Cyanophile A cell or element that is differentially coloured blue by a staining procedure. Origin: cyano-+ G. Philos, fond (05 Mar 2000) |
| cyanophilous | Readily stainable with a blue dye. (05 Mar 2000) |
| Cyanophyceae | Synonym: Cyanobacteria. Origin: cyano-+ G. Phykos, seaweed (05 Mar 2000) |
| Cyanophyta | <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) |
| cyanopia | A condition in which all objects appear blue; may temporarily follow cataract extraction. Synonym: blue vision, cyanopia. Origin: cyano-+ G. Opsis, vision (05 Mar 2000) |
| cyanopsia | A condition in which all objects appear blue; may temporarily follow cataract extraction. Synonym: blue vision, cyanopia. Origin: cyano-+ G. Opsis, vision (05 Mar 2000) |
| cyanosed | Demonstrating cyanosis. (27 Sep 1997) |
| cyanosis | <clinical sign> A bluish discolouration, applied especially to such discolouration of skin and mucous membranes due to excessive concentration of reduced haemoglobin in the blood. Origin: Gr. Kyanos = blue (21 May 1997) |
| cyanosis retinae | Venous congestion of the retina. Shunt cyanosis, any blue colour of the entire skin or a region of the skin or mucous membrane due to a right to left shunt permitting unoxygenated blood to reach the left side of the circulation. (05 Mar 2000) |
| cyanotic | Demonstrating cyanosis. (27 Sep 1997) |
| cyanotic asphyxia | Asphyxia to the point of sufficient destruction of haemoglobin to produce cyanosis. (05 Mar 2000) |
| cyanotic atrophy | Atrophy due to destruction of the parenchymatous cells of an organ as a consequence of chronic venous congestion. Synonym: red atrophy. (05 Mar 2000) |
| cyanotic atrophy of the liver | A sequela of longstanding hepatic congestion due to high pressure in the right atrium as in chronic constrictive pericarditis and severe, protracted right ventricular failure. (05 Mar 2000) |