[ klawr-uh-neyt, klohr- ]
/ ˈklɔr əˌneɪt, ˈkloʊr- /

verb (used with object), chlo·ri·nat·ed, chlo·ri·nat·ing.

  1. to combine or treat with chlorine.
  2. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
to disinfect (water) by means of chlorine.
Metallurgy. to treat (a gold ore) with chlorine gas in order that the gold may be removed as a soluble chloride.

Nearby words

  1. chloride of lime,
  2. chloride paper,
  3. chloride shift,
  4. chloridize,
  5. chloriduria,
  6. chlorinated,
  7. chlorinated lime,
  8. chlorination,
  9. chlorine,
  10. chlorine 36

Origin of chlorinate

First recorded in 1855–60; chlorine + -ate1

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

Examples from the Web for chlorinate

  • The first step is to chlorinate ordinary toluol, one of the coal tar bases, to produce benzyl chloride.

British Dictionary definitions for chlorinate


/ (ˈklɔːrɪˌneɪt) /

verb (tr)

to combine or treat (a substance) with chlorine
to disinfect (water) with chlorine
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 chlorinate



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

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for chlorinate


[ klôrə-nāt′ ]


To treat or combine with chlorine or a chlorine compound.
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.

Science definitions for chlorinate


[ klôrə-nāt′ ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.