| Chagas-Cruz disease | Trypanosomiasis caused by Trypanosoma (or Schizotrypanum) cruzi and transmitted by certain species of reduviid (triatomine) bugs. In its acute form, it is seen most frequently in young children, with swelling of the skin at the site of entry, most often the face, and regional lymph node enlargement; in its chronic form it can assume several aspects, commonly cardiomyopathy, but megacolon and megaesophagus also occur; natural reservoirs include dogs, armadillos, rodents, and other domestic, domiciliated, and wild mammals. Synonym: Chagas' disease, Chagas-Cruz disease, Cruz trypanosomiasis. (05 Mar 2000) |
|---|---|
| chagasic myocardiopathy | Heart muscle disease due to Chagas' disease (caused by Trypanosoma cruzi) in which right bundle branch block is common. (05 Mar 2000) |
| chagoma | The skin lesion in acute Chagas' disease. (05 Mar 2000) |
| Chagres virus | A virus in the family Bunyaviridae, an agent of bunyavirus encephalitis. (05 Mar 2000) |
| chain | 1. In chemistry, a series of atoms held together by one or more covalent bonds. 2. In bacteriology, a linear arrangement of living cells that have divided in one plane and remain attached to each other. Origin: L. Catena (05 Mar 2000) |
| chain isomer | <chemistry> One of two or more compounds having the same chemical composition but differing in the arrangement of the atoms (usually carbon atoms) forming the backbone of the structure of the compounds. (21 Mar 1998) |
| chain reaction | A reaction in which a product reacts and thus continues the reaction. (09 Oct 1997) |
| chain reflex | A series of reflexs, each serving as a stimulus for the next. (05 Mar 2000) |
| chain, orthodontic chain | <dentistry> A stretchable plastic chain used to hold archwires into brackets and to moke teeth. (08 Jan 1998) |
| chain-compensated spirometer | A Tissot spirometer in which compensation for change in bell buoyancy is accomplished automatically by a suspending chain of correct mass per unit length. (05 Mar 2000) |
| chaining | Learning related behaviours in a series in which each response serves as a stimulus for the next response. (05 Mar 2000) |
| chair form | The more stable of two conformations assumed by 6-membered cyclic sugars (e.g., the pyranoses) or cyclohexane derivatives, as opposed to boat form. See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| chalasia | Inhibition and relaxation of any previously sustained contraction of muscle, usually of a synergic group of muscles. Origin: G. Chalao, to loosen (05 Mar 2000) |
| chalaza | In botany terminology, the part of an ovule to which the end of the stalk (funicle) is attached. (09 Oct 1997) |
| chalazion | A cyst within the eyelid due to a plugging of the Meibomian gland (in the eyelid). Treatment includes warm wet compresses. Surgical drainage may be required for those which do not respond to conservative measures. (27 Sep 1997) |