| bleaching | The act or process of whitening, by removing colour or stains; especially. The process of whitening fabrics by chemical agents. Bleaching powder, a powder for bleaching, consisting of chloride of lime, or some other chemical or chemicals. Source: Websters Dictionary (01 Mar 1998) |
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| 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) |
| tooth bleaching | The use of a chemical oxidizing agent (sometimes in combination with heat) to lighten tooth discolorations. (boucher's clinical dental terminology, 4th ed, p34) (12 Dec 1998) |
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