| cryoconization | Freezing of a cone of endocervical tissue in vivo with a cryoprobe. (05 Mar 2000) |
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| cryoextraction | Removal of cataracts by the adhesion of a freezing probe to the lens; now rarely done. (05 Mar 2000) |
| cryoextractor | An instrument, artificially cooled, for extraction of the lens by freezing contact. (05 Mar 2000) |
| cryofibrinogen | An abnormal type of fibrinogen very rarely found in human plasma; it is precipitated upon cooling, but redissolves when warmed to room temperature. (05 Mar 2000) |
| cryofibrinogenaemia | The presence in the blood of cryofibrinogens. (05 Mar 2000) |
| cryofixation | <procedure> Fixation processes for microscopy carried out at low temperature to improve the quality of fixation. Often very low temperatures and fast cooling are used to prevent formation of ice crystals. Cooling rates of 10,000 degrees per minute may be used and liquid nitrogen or even liquid helium temperatures used. Especially for preparing specimens for scanning EM. Frequently no chemical treatment is used. (18 Nov 1997) |
| cryofluorane | 1,2-Dichloro-1,1,2,2-tetrafluoroethane;used as a refrigerant and aerosol propellant; may be irritating to the respiratory tract and mildly narcotic. (05 Mar 2000) |
| cryogen | A freezing substance used to produce very low temperatures. (05 Mar 2000) |
| cryogenic | <radiobiology> Loosely, very cold. Used to describe systems at very low temperatures. Superconducting magnetic field coils currently need to operate at cryogenic temperatures (for example, liquid helium at 4 Kelvin). Origin: Gr. Gennan = to produce (09 Oct 1997) |
| cryogenics | The science concerned with the production and effects of very low temperatures, particularly temperatures in the range of liquid helium (<4.25 K). Origin: cryo-+ G. -gen, producing (05 Mar 2000) |
| cryoglobulin | <haematology> Abnormal plasma globulin (IgG or IgM) that precipitates when serum is cooled. (18 Nov 1997) |
| cryoglobulinaemia | A condition characterised by the presence of cryoglobulins in the blood. They are precipitated into the microvasculature on exposure to cold and cause restricted blood flow in exposed areas. (12 Dec 1998) |
| cryoglobulins | Abnormal plasma proteins (paraproteins), now grouped with gamma globulins, characterised by precipitating, gelling, or crystallizing when serum or solutions of them are cooled; distinguished from Bence Jones proteins by their larger molecular weight (approximately 200,000 compared with 35,000 to 50,000); they may appear in patients with multiple myeloma. (05 Mar 2000) |
| cryohydrate | A eutectic system of a salt and water. (05 Mar 2000) |
| cryohypophysectomy | Destruction of hypophysis by the application of extreme cold. Origin: cryo-+ hypophysis + G. Ektome, excision (05 Mar 2000) |