| bleaching powder | A mixture of varying proportions of complexes of chlorine with calcium oxide and calcium hydroxide. Contains 24-37% available chlorine. Decomposes in moist conditions to liberate chlorine. Strong irritant due to chlorine vapors. Used for disinfecting drinking water, sewage etc.; in the bleaching of wood pulp, linen, cotton, straw, oils, soaps, and laundry; as an oxidiser; in destroying caterpillars; and as a decontaminant for mustard gas and similar substances. Synonym: bleaching powder. (05 Mar 2000) |
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| goa powder | A bitter powder (also called araroba) found in the interspaces of the wood of a Brazilian tree (Andira araroba) and used as a medicine. It is the material from which chrysarobin is obtained. Origin: So called from Goa, on the Malabar coast, whither it was shipped from Portugal. Source: Websters Dictionary (01 Mar 1998) |
| powder | 1. The fine particles to which any dry substance is reduced by pounding, grinding, or triturating, or into which it falls by decay; dust. "Grind their bones to powder small." (Shak) 2. An explosive mixture used in gunnery, blasting, etc.; gunpowder. See Gunpowder. Atlas powder, Baking powder, etc. See Atlas, Baking, etc. Powder down, a boy formerly employed on war vessels to carry powder; a powder boy. Powder post. See Dry rot, under Dry. Powder puff. See Puff. Origin: OE. Poudre, pouldre, F. Poudre, OF. Also poldre, puldre, L. Pulvis, pulveris: cf. Pollen fine flour, mill dust, E. Pollen. Cf. Polverine, Pulverize. 1. To be reduced to powder; to become like powder; as, some salts powder easily. 2. To use powder on the hair or skin; as, she paints and powders. Source: Websters Dictionary (01 Mar 1998) |
| powder-posted | Affected with dry rot; reduced to dust by rot. See Dry rot, under Dry. (01 Mar 1998) |
| dover's powder | <alchemy> A powder of ipecac and opium, compounded, in the United States, with sugar of milk, but in England (as formerly in the United States) with sulphate of potash, and in France (as in Dr. Dover's original prescription) with nitrate and sulphate of potash and licorice. It is an anodyne diaphoretic. Origin: From Dr. Dover, an English physician. (04 Mar 1998) |
| james's powder | <medicine> Antimonial powder, first prepared by Dr. James, ar English physician. Synonym: fever powder. Source: Websters Dictionary (01 Mar 1998) |
| aneurysmal cough | Cough due to impingement of an aortic aneurysm on the recurrent laryngeal nerve or other nearby structures. (05 Mar 2000) |
| brassy cough | Loud metallic barking cough caused by subglottic oedema. (05 Mar 2000) |
| reflex cough | A cough excited reflexly by irritation in some distant part, as the ear or the stomach. (05 Mar 2000) |
| weaver's cough | An obsolete term for cough, dyspnea, and sense of constriction of the chest, caused in persons working with mildewed yarns. (05 Mar 2000) |
| whooping cough | <paediatrics> A bacterial infection that has become quite rare due to effective and widespread vaccination programs (DPT vaccine). Only about 4, 500 cases are reported annually in the U.S. Can present as a mild or severe illness. Symptoms include runny nose, low-grade fever, conjunctivitis and a characteristic cough. Coughing spells end in a whoop caused by the forceful inspiration of air. (13 Nov 1997) |
| whooping-cough vaccine | See: diphtheria toxoid, tetanus toxoid, and pertussis vaccine. (05 Mar 2000) |
| cough | <clinical sign> A rapid expulsion of air from the lungs typically in order to clear the lung airways of fluids, mucus, or material. (12 Dec 1998) |
| cough fracture | <orthopaedics> A fracture of a rib or cartilage, usually the fifth or seventh, from vigorous coughing. (05 Mar 2000) |
| cough reflex | <chest medicine, neurology, physiology> The reflex which mediates coughing in response to irritation of the larynx or tracheobronchial tree. Synonym: laryngeal reflex. (05 Mar 2000) |