| charge exchange | <radiobiology> Phenomenon in which an ion colliding with a molecule (or an atom) neutralises itself by capturing an electron from the molecule or atom, and transforming the molecule or atom into a positive radical or ion. (13 Nov 1997) |
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| charge nurse | A nurse administratively responsible for a designated hospital unit on an 8 hour basis. Synonym: head nurse. (05 Mar 2000) |
| charge transfer | A complex between two organic molecules in which an electron from one (the donor) is transferred to the other (the acceptor), becoming generally distributed throughout the latter; subsequent transfer of a hydrogen atom completes the reduction of the acceptor; such complex's are generally highly coloured and may be so observed, a network of hydrogen bridges at the catalytic centre of certain proteases. Synonym: charge transfer system. (05 Mar 2000) |
| charge transfer complex | A complex between two organic molecules in which an electron from one (the donor) is transferred to the other (the acceptor), becoming generally distributed throughout the latter; subsequent transfer of a hydrogen atom completes the reduction of the acceptor; such complex's are generally highly coloured and may be so observed, a network of hydrogen bridges at the catalytic centre of certain proteases. Synonym: charge transfer system. (05 Mar 2000) |
| charge transfer system | A complex between two organic molecules in which an electron from one (the donor) is transferred to the other (the acceptor), becoming generally distributed throughout the latter; subsequent transfer of a hydrogen atom completes the reduction of the acceptor; such complex's are generally highly coloured and may be so observed, a network of hydrogen bridges at the catalytic centre of certain proteases. Synonym: charge transfer system. (05 Mar 2000) |
| charged particle | <radiobiology> A particle which carries a positive or negative electrical charge. In plasma physics, this typically means an ionised atom or molecule, or an electron. (09 Oct 1997) |
| charities | Social welfare organizations with programs designed to assist individuals in times of need. (12 Dec 1998) |
| charlatan | A medical fraud claiming to cure disease by useless procedures, secret remedies, and worthless diagnostic and therapeutic machines. Synonym: quack. Origin: Fr., fr. It. Ciarlare, to prattle (05 Mar 2000) |
| charlatanism | A fraudulent claim to medical knowledge; treating the sick without knowledge of medicine or authority to practice medicine. Synonym: quackery. (05 Mar 2000) |
| Charles Darwin | <person> An English naturalist who lived from 1809 to 1882, he studied and documented the flora and fauna of parts of coastal South America, including the Galapagos Islands, but is most famous for developing the theories of evolution and natural selection. Lived: 1809-1882. (09 Oct 1997) |
| Charles law | All gases expand equally on heating, namely, 1/273.16 of their volume at 0캜 for every degree Celsius. Synonym: Gay-Lussac's law. (05 Mar 2000) |
| Charles's law | <physics> The statement that the volume of a sample of gas is directly proportional to the temperature of the gas (at constant pressure). (13 Nov 1997) |
| Charles, Jacques | <person> French physicist, 1746-1823. See: Charles law. (05 Mar 2000) |
| charley horse | Localised pain or muscle stiffness following a contusion of a muscle. Origin: slang (05 Mar 2000) |
| Charlouis | M., 19th century Dutch army surgeon in Java. See: Charlouis' disease. (05 Mar 2000) |