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sodium hydroxide

noun, Chemistry
1.
a white, deliquescent, water-soluble solid, NaOH, usually in the form of lumps, sticks, chips, or pellets, that upon solution in water generates heat: used chiefly in the manufacture of other chemicals, rayon, film, soap, as a laboratory reagent, and in medicine as a caustic.
Also called caustic soda, soda.
Origin
1880-1885
1880-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for sodium hydroxide
  • Oxalic acid is made commercially by treating either sugar with nitric acid or cellulose with sodium hydroxide.
  • sodium hydroxide spontaneously dissolves in water and releases heat in the process.
British Dictionary definitions for sodium hydroxide

sodium hydroxide

noun
1.
a white deliquescent strongly alkaline solid used in the manufacture of rayon, paper, aluminium, soap, and sodium compounds. Formula: NaOH Also called caustic soda 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
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sodium hydroxide in Medicine

sodium hydroxide n.
A strongly alkaline compound used externally. Also called caustic soda.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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sodium hydroxide in Science
sodium hydroxide  
A white, corrosive, solid compound that absorbs water and carbon dioxide from the atmosphere and forms lye when in solution. Sodium hydroxide is toxic and strongly alkaline and is used to make chemicals and soaps and to refine petroleum. Chemical formula: NaOH.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Word Value for sodium

9
11
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