| 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) |
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| 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) |