a white, deliquescent, water-soluble solid, KOH, usually in the form of lumps, sticks, or pellets, that upon solution in water generates heat: used chiefly in the manufacture of soap, as a laboratory reagent, and as a caustic.
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Also called caustic potash, potassium hydrate.
Origin of potassium hydroxide
First recorded in 1880–85
Words nearby potassium hydroxide
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for potassium hydroxide
a white deliquescent alkaline solid used in the manufacture of soap, liquid shampoos, and detergents. Formula: KOHAlso called: caustic potash See also lye
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for potassium hydroxide
A caustic white solid used as a bleach and in the manufacture of soaps, dyes, and many potassium compounds.potash
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for potassium hydroxide
A white, corrosive, solid compound used in bleaches and to make soaps and detergents. It is deliquescent, soluble in water and very soluble in alcohol. In solution, it forms lye. Chemical formula: KOH.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.