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dechlorinate

[dee-klawr-uh-neyt, -klohr-]
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verb (used with object), de·chlo·ri·nat·ed, de·chlo·ri·nat·ing. Chemistry.
  1. to remove the chlorine from (a substance, as water): to dechlorinate tap water for use in an aquarium.
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Origin of dechlorinate

First recorded in 1940–45; de- + chlorinate
Related formsde·chlo·ri·na·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018