micronucleus
siqua
| 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) |
| hydrophobic | <chemistry> Not readily absorbing water or being adversely affected by water, as a hydrophobic colloid. (18 Nov 1997) |
| hydrophobic bond | See: hydrophobic interaction. (05 Mar 2000) |
| hydrophobic bonding | <chemistry> Interaction driven by the exclusion of nonpolar residues from water. It is an important determinant of protein conformation and of lipid structures and is considered to be a consequence of maximising polar interactions rather than a positive interaction between apolar residues. (18 Nov 1997) |
| hydrophobic colloid | A colloidal solution in which the disperse particles are solid and lyophobe or hydrophobe, and are therefore sharply demarcated from the fluid in which they are suspended. Synonym: hydrophobic colloid, lyophobic colloid, suspension colloid. Origin: suspension + G. Eidos, resemblance (05 Mar 2000) |
| hydrophobic effect | <chemistry> The tendency for the nonpolar portions of a group of lipid molecules to clump together with one another and exclude water and other polar molecules. The polar portions of the lipid molecules end up facing out. The hydrophobic effect is primarily responsible for the construction of lipid bilayers. (09 Oct 1997) |
| hydrophobic interaction | <chemistry> The attractive force between molecules due to the close positioning of non-hydrophilic portions of the two molecules. (09 Oct 1997) |
| hydrophobic tetanus | A type of local tetanus that follows wounds to the face and head; after a brief incubation (1-2 days) the facial and ocular muscles become paretic yet undergo repeated tetanic spasms. The throat and tongue muscles may also be affected. Synonym: cerebral tetanus, head tetanus, hydrophobic tetanus, rose cephalic tetanus, Rose's cephalic tetanus. (05 Mar 2000) |
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