Chlorination
WordNet
noun
(1) Disinfection of water by the addition of small amounts of chlorine or a chlorine compound
(2) The addition or substitution of chlorine in organic compounds
WiktionaryText
Noun
- The act or process of chlorinating something; especially, the addition of chlorine to water to purify it, and a process for the extraction of gold by exposure of the auriferous material to chlorine gas.