• synonyms


[klawr-uh-neyt, klohr-]
verb (used with object), chlo·ri·nat·ed, chlo·ri·nat·ing.
  1. Chemistry.
    1. to combine or treat with chlorine.
    2. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
  2. to disinfect (water) by means of chlorine.
  3. Metallurgy. to treat (a gold ore) with chlorine gas in order that the gold may be removed as a soluble chloride.
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Origin of chlorinate

First recorded in 1855–60; chlorine + -ate1
Related formschlo·ri·na·tion, nounchlo·ri·na·tor, nounhy·per·chlo·ri·na·tion, nounpost·chlo·ri·na·tion, adjectiveun·chlo·ri·nat·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for chlorination

Historical Examples of chlorination

  • Such a comparison shows the superiority of the chlorination method.'

    Researches on Cellulose

    C. F. Cross

  • No apology is necessary for the publication of a book on the chlorination of water.

  • The chlorination experiments of the latter were reported by Kellerman, Pratt, and Kimberly.

  • This acid, on chlorination at low temperatures, yields p-sulphondichloraminobenzoic acid (halazone).

  • Chlorination, by decreasing the load on filter beds, has enabled the rate of filtration to be increased in some cases.

British Dictionary definitions for chlorination


verb (tr)
  1. to combine or treat (a substance) with chlorine
  2. to disinfect (water) with chlorine
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Derived Formschlorination, nounchlorinator, noun
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

Word Origin and History for chlorination


1854, noun of action from chlorinate (v.).

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1836 (implied in chlorinated), from chlorine (n.) + -ate (2). Related: Chlorinating.

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Online Etymology Dictionary, © 2010 Douglas Harper

chlorination in Medicine


  1. To treat or combine with chlorine or a chlorine compound.
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Related formschlo′ri•nation n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

chlorination in Science


  1. To add chlorine or one of its compounds to a substance. Water and sewage are chlorinated to be disinfected, and paper pulp is chlorinated to be bleached.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.