| cheiropodalgia | Pain in the hands and in the feet. Synonym: chiropodalgia. Origin: cheiro-+ G. Pous, foot, + algos, pain (05 Mar 2000) |
|---|---|
| cheiropompholyx | Synonym: dyshidrosis. Origin: cheiro-+ G. Pompholyx, a bubble, fr. Pomphos, a blister (05 Mar 2000) |
| cheirospasm | Spasm of the muscles of the hand, as in writers' cramp. Synonym: chirospasm. Origin: cheiro-+ G. Spasmos, spasm (05 Mar 2000) |
| chelate | 1. To effect chelation. 2. Pertaining to chelation. 3. A complex formed through chelation. (05 Mar 2000) |
| chelating agents | Organic chemicals that form two or more coordination bonds with a central metal ion. Heterocyclic rings are formed with the central metal atom as part of the ring. Some biological systems form metal chelates, e.g., the iron-binding porphyrin group of haemoglobin and the magnesium-binding chlorophyll of plants. They are used chemically to remove ions from solutions, medicinally against microorganisms, to treat metal poisoning, and in chemotherapy protocols. (12 Dec 1998) |
| chelation | <biochemistry, chemistry> Combination with a metal in complexes in which the metal is part of a ring. (21 May 1997) |
| chelation therapy | Therapy of heavy metal poisoning using agents which sequester the metal from organs or tissues and bind it firmly within the ring structure of a new compound which can be eliminated from the body. (12 Dec 1998) |
| chelator | A chelator is an organic chemical that bonds with and removes free metal ions from solutions. Chelating agents are sometimes used to treat people suffering from metal poisoning. (09 Oct 1997) |
| chelicera | One of the two anterior appendages of arachnids; in ticks and parasitic mites, the chelicerae are piercing and cutting structures, and constitute important feeding organs. Origin: G. Chele, claw, + keras, horn (05 Mar 2000) |
| chelidon | Synonym: cubital fossa. Origin: G. Chelidon, a swallow, because of fancied resemblance to the shape of a swallow's tail (05 Mar 2000) |
| cheloid | <dermatology> A sharply elevated, irregularly shaped, progressively enlarging scar due to the formation of excessive amounts of collagen in the corium during connective tissue repair. Origin: Gr. Kel = tumour, eidos = form (18 Nov 1997) |
| cheloid scar | An overgrowth of scar tissue that can result in cosmetic deformity. (27 Sep 1997) |
| Chelonia | An order of reptiles, embracing the turtles, tortoises, and terrapins, whose bodies are enclosed in a bony shell covered with epidermal scutes and formed dorsally by expanded ribs and ventrally by a sternal plastron. Origin: G. Chelone, a tortoise (05 Mar 2000) |
| chelonian | Resembling or relating to a turtle, tortoise, or terrapin. (05 Mar 2000) |
| chem- | See: chemo-. (05 Mar 2000) |