| lead carbonate | A heavy white powder that is insoluble in water; occasionally, it is used to relieve irritation in dermatitis, but it is used largely in the manufacture of paint and in the arts and is thus productive of lead poisoning. Synonym: ceruse, white lead. (05 Mar 2000) |
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| lithium carbonate | This compound is used to treat manic depression. (09 Oct 1997) |
| basic | 1. <chemistry> Relating to a base; performing the office of a base in a salt. Having the base in excess, or the amount of the base atomically greater than that of the acid, or exceeding in proportion that of the related neutral salt. Apparently alkaline, as certain normal salts which exhibit alkaline reactions with test paper. 2. <chemical> Said of crystalline rocks which contain a relatively low percentage of silica, as basalt. <chemistry> Basic salt, a salt formed from a base or hydroxide by the partial replacement of its hydrogen by a negative or acid element or radical. Source: Websters Dictionary (01 Mar 1998) |
| basic amino acid | An amino acid containing a second basic group (usually an amino group); e.g., lysine, arginine, ornithine. Synonym: dibasic amino acid. (05 Mar 2000) |
| basic anhydride | <chemical> A chemical (usually the oxide of a metal) which forms a base when it is mixed with water. (09 Oct 1997) |
| basic diet | A diet consisting mainly of fruits, vegetables, and milk (with minimal amounts of meat, fish, eggs, cheese, and cereals), which, when catabolised, leave an alkaline residue to be excreted in the urine. Synonym: acid-ash diet, basic diet. (05 Mar 2000) |
| basic dyes | Dye's which ionise in solution to give positively charged ions or cations; the auxochrome group is an amine which can form a salt with an acid like HCl; solutions are usually slightly acidic; examples include basic fuchsin and toluidine blue O. (05 Mar 2000) |
| basic electrical rhythm | A slow wave of depolarisation of smooth muscle from the fundus to the pylorus that coordinates gastric peristalsis and emptying. (05 Mar 2000) |
| basic esotropia | That type of esotropia not influenced by correction of refractive error. Synonym: basic esotropia. (05 Mar 2000) |
| basic exotropia | Exotropia in which the strabismus is the same for near and far vision. (05 Mar 2000) |
| basic fuchsin | A triphenylmethane dye whose dominant component is pararosanilin; an important stain in histology, histochemistry, and bacteriology. Synonym: diamond fuchsin. (05 Mar 2000) |
| basic fuchsin-methylene blue stain | <technique> A stain for intact epoxy sections; semi-thick sections of plastic-embedded tissues have nuclei stained purple; collagen, elastic lamina, and connective tissue are stained blue; mitochondria, myelin, and lipid droplets are stained red; cytoplasm, smooth muscle cells, axoplasm, and chrondroblasts are stained pink. (05 Mar 2000) |
| basic life support | Emergency cardiopulmonary resuscitation, control of bleeding, treatment of shock, acidosis, and poisoning, stabilization of injuries and wounds, and basic first aid. (05 Mar 2000) |
| basic oxide | A base anhydride; an oxide of an electropositive element or radical; it can combine with water to form a base. (05 Mar 2000) |
| basic personality | See: basic personality type. (05 Mar 2000) |