| calcium oxalate | <chemical> Ethanedioic acid calcium salt. The calcium salt of oxalic acid, occurring in the urine as crystals and in certain calculi. Chemical name: Ethanedioic acid, calcium salt (12 Dec 1998) |
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| calcium oxide | <chemical> A chemical compound with the formula CaO which is a whitish, odourless solid that does not dissolve well in water. It will, however, react with water (H20) to form calcium hydroxide (CaOH, a base). It has a melting point of 2614 degrees Celsius and a boiling point of 2850 degrees Celsius. It can be made by heating calcium carbonate (CaCO3, limestone) until carbon dioxide (CO2) is released. It has a great many industrial uses. (09 Oct 1997) |
| calcium pantothenate | The calcium salt of pantothenic acid; a vitamin B filtrate factor. (05 Mar 2000) |
| calcium phosphates | Calcium salts of phosphoric acid. These compounds are frequently used as calcium supplements. (12 Dec 1998) |
| calcium propionate | The calcium salt of propionic acid; an antifungal agent. (05 Mar 2000) |
| calcium pump | A transport protein responsible for moving calcium out of the cytoplasm. See: calcium ATPase. (18 Nov 1997) |
| calcium radioisotopes | Unstable isotopes of calcium that decay or disintegrate emitting radiation. Ca atoms with atomic weights 39, 41, 45, 47, 49, and 50 are radioactive calcium isotopes. (12 Dec 1998) |
| calcium rigor | Arrest of the heart in the fully contracted state as a result of poisoning with calcium. (05 Mar 2000) |
| calcium saccharate | Calcium d-saccharate;used as an antacid in dyspepsia and flatulence, as an antidote in carbolic acid poisoning, and as a stabiliser for calcium gluconate solution for parenteral administration. (05 Mar 2000) |
| calcium sign | In chest radiography, displacement of the line of the calcified intima of the aorta away from its outer wall, a finding in a small percentage of cases of dissection of blood in the aortic media; the expression "displaced intimal calcification" is preferred to the listed term. See: aortic dissection. (05 Mar 2000) |
| calcium stearate | Used in the preparation of tablets as a lubricant for tablet machinery and to keep powder mixtures flowing. (05 Mar 2000) |
| calcium sulfate | <chemical> It exists in an anhydrous form and in various states of hydration: the hemihydrate is plaster of paris, the dihydrate is gypsum. It is used in building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. Pharmacological action: dental materials, excipient. Chemical name: Sulfuric acid, calcium salt (1:1) (12 Dec 1998) |
| calcium sulfite | Used as an intestinal antiseptic, and locally in the treatment of parasitic skin diseases. (05 Mar 2000) |
| calcium-transporting atpase | <enzyme> An enzyme found in the sarcoplasmic reticulum vesicle membrane. During the relaxation of skeletal muscles and muscle rich in mitochondria, this enzyme catalyses the active transport of calcium into the sarcoplasmic reticulum vesicles from the sarcoplasm. It requires micromolar concentrations of calcium and utilises mgatp as a substrate. Chemical name: ATP phosphohydrolase (Calcium-transporting) Registry number: EC 3.6.1.38 (12 Dec 1998) |
| calcium trisodium pentetate | The calcium trisodium salt of pentetic acid. Synonym: calcium trisodium pentetate. (05 Mar 2000) |