| cyanotic induration | Induration related to persistent, chronic venous congestion in an organ or tissue, frequently resulting in fibrous thickening of the walls of the veins and eventual fibrosis of adjacent tissue; the affected tissue becomes firmer than normal, and tends to have an unusual, red-blue colour. (05 Mar 2000) |
|---|---|
| cyanuria | The presence of blue urine. Origin: cyano-+ G. Ouron, urine (05 Mar 2000) |
| cyanuric acid | 2,4,6-Trihydroxy-1,3,5-triazine;a cyclic product formed by heating urea; used industrially and as an herbicide. (05 Mar 2000) |
| cyanuric acid amidohydrolase | <enzyme> From pseudomonas sp. Strain nrrlb-12228 and klebsiella pneumoniae 99; catalyses the conversion of cyanuric acid to biuret and co2 Registry number: EC 3.5.4.- (26 Jun 1999) |
| cyathium | An inflorescence of unisexual flowers surrounded by inwardly-rolled bracts. (09 Oct 1997) |
| Cyathostoma | A genus of gapeworms of poultry in the nematode family Syngamidae, so called because of the gaping habit of fowl infected by these worms in their upper respiratory tract. Origin: G. Kyathos, cup, cup-shaped, + stoma, mouth Cyathostoma bronchialis, a species found in wild geese and domestic ducks, geese, and swans; occurs in the larynx, trachea, and bronchi and causes distress and symptoms similar to those produced by the chicken gapeworm, Syngamus trachea; its life cycle is thought to be similar to that of Syngamus trachea. (05 Mar 2000) |
| Cyathostomum | A genus of strongyle nematodes (family Cyasthostomidae, formerly part of the family Strongylidae); it includes many of the small strongyles of horses formerly placed in the genus Trichonema, which have been variously divided into a number of genera and subgenera. Origin: see Cyathostoma (05 Mar 2000) |
| cybernetics | That branch of learning which brings together theories and studies on communication and control in living organisms and machines. (12 Dec 1998) |
| cybrid | A cell with cytoplasm from two different cells as a result of cell hybridization. Origin: cell + hybrid (05 Mar 2000) |
| cycasin | <chemical> Carcinogenic and neurotoxic glycoside occurring in a number of plant species, including cycas revoluta. Pharmacological action: carcinogens. Chemical name: beta-D-Glucopyranoside, (methyl-ONN-azoxy)methyl (12 Dec 1998) |
| cycl- | See: cyclo-. (05 Mar 2000) |
| cyclacillin | <chemical> A cyclohexylamido analog of penicillanic acid. Pharmacological action: penicillins. Chemical name: 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(((1-aminocyclohexyl)carbonyl)amino)-3,3-dimethyl-7-oxo-, (2S-(2alpha,5alpha,6beta))- (12 Dec 1998) |
| cyclamate | A salt or ester of cyclamic acid; the calcium and sodium are noncaloric artificial sweetening agents. (05 Mar 2000) |
| cyclamates | <chemical> Cyclamic acid and its calcium and sodium salts. They are intense sweetening agents, but have been banned in many countries because there is evidence that they may cause cancer. Pharmacological action: carcinogens. (12 Dec 1998) |
| cyclamic acid | A sweetening agent, usually used as sodium or calcium cyclamate. Synonym: cyclohexanesulfamic acid, cyclohexylsulfamic acid. (05 Mar 2000) |