• synonyms


  1. variant of chlor-1 before a consonant: chlorophyll.
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  1. variant of chlor-2 before a consonant: chloroform.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for chloro-


before a vowel chlor-

combining form
  1. indicating the colour greenchlorophyll
  2. chlorinechloroform
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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 chloro-

before vowels chlor-, word-forming element used in chemistry, usually indicating the presence of chlorine in a compound, but sometimes "green," from Latinized comb. form of Greek khloros (see Chloe); also cf. chlorine.

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Online Etymology Dictionary, © 2010 Douglas Harper

chloro- in Medicine


  1. Green:chlorosis.
  2. Chlorine:chloroform.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.