potassium hydroxide

noun Chemistry.

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.

Nearby words

  1. potassium feldspar,
  2. potassium ferricyanide,
  3. potassium ferrocyanide,
  4. potassium fluoride,
  5. potassium hydrogen tartrate,
  6. potassium iodide,
  7. potassium monophosphate,
  8. potassium myronate,
  9. potassium nitrate,
  10. potassium oxalate

Origin of potassium hydroxide

First recorded in 1880–85

Also called caustic potash, potassium hydrate.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for potassium hydroxide

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

Medicine definitions for potassium hydroxide

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.

Science definitions for potassium hydroxide

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.