| chafe | To cause irritation of the skin by friction. Origin: Fr. Chauffer, to heat, fr. L. Calefacio, to make warm (05 Mar 2000) |
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| chaff | <plant biology> Thin, membranous scales or bracts, thin, dry unfertilized ovules among the fully developed seeds of a fruit. (21 Mar 1998) |
| chagas cardiomyopathy | Cardiomyopathy with conduction defects and cardiac enlargement characteristic of the last phase of chagas disease. (12 Dec 1998) |
| Chagas disease | <infectious disease> A parasitic disease caused by the American strain, Trypanosoma cruzi. Chagas disease is usually transmitted by the bite of the kissing bug, but may also follow breast feeding (to infants) and blood transfusion. Although much more common in South America, it does, on rare occasions, occur in the U.S.A. A nodular swelling (chagoma) appears at the site of inoculation following a bite. The acute phase of the disease can last 2 to 3 months and patients present with fever, headache, anorexia, conjunctivitis and myocarditis. Infants can develop meningitis and heart involvement. Trypanosomiasis can cause congestive heart failure and ventricular aneurysms. Treatment is with nifurtimox. (21 Mar 1998) |
| Chagas' 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) |
| Chagas, Carlos | <person> Brazilian physician, 1879-1934. See: Chagas' disease, Chagas-Cruz disease. (05 Mar 2000) |
| 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) |