bleaching powder
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noun Chemistry.
a white powder that decomposes on contact with water and has the characteristic odor of gaseous chlorine: regarded, when dry, as a mixed calcium hypochlorite-chloride, used as a commercial bleach for wood pulp, textiles, oils, and soaps, and in laundering as a decolorizer and disinfectant.
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Origin of bleaching powder
First recorded in 1850–55
Words nearby bleaching powder
bleach, bleacher, bleacherite, bleachers, bleachery, bleaching powder, bleak, Bleak House, blear, bleary, bleary-eyed
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for bleaching powder
British Dictionary definitions for bleaching powder
bleaching powder
noun
a white powder with the odour of chlorine, consisting of chlorinated calcium hydroxide with an approximate formula CaCl(OCl).4H 2 O. It is used in solution as a bleaching agent and disinfectantAlso called: chloride of lime, chlorinated lime
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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