[an-ti-klawr, -klohr]
noun Chemistry.
  1. any of various substances, especially sodium thiosulfate, used for removing excess chlorine from paper pulp, textile, fiber, etc., after bleaching.

Origin of antichlor

First recorded in 1865–70; anti- + chlor(ine)
Related formsan·ti·chlo·ris·tic [an-ti-klaw-ris-tik, -kloh-] /ˌæn tɪ klɔˈrɪs tɪk, -kloʊ-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for antichlor


  1. a substance used to remove chlorine from a material after bleaching or to neutralize the chlorine present
Derived Formsantichloristic, adjective

Word Origin for antichlor

C19: from anti- + chlor (ine)
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