dechlorinate
verb
de·chlo·ri·nate (ˌ)dē-ˈklȯr-ə-ˌnāt 
dechlorinated; dechlorinating; dechlorinates
transitive verb
: to remove chlorine from
dechlorinate water
dechlorination
(ˌ)dē-ˌklȯr-ə-ˈnā-shən
noun 
Example Sentences
Recent Examples on the Web Next chlorine is added, and then bisulphate is added to dechlorinate the water. 
Christine Woodside, courant.com, 4 Oct. 2019 During this mode, the system screens out solids, chlorinates the water, dechlorinates it, and then discharges it. Christine Woodside, courant.com, 4 Oct. 2019
Christine Woodside, courant.com, 4 Oct. 2019 During this mode, the system screens out solids, chlorinates the water, dechlorinates it, and then discharges it. Christine Woodside, courant.com, 4 Oct. 2019 Word History
First Known Use
1941, in the meaning defined above
Medical Definition
dechlorinate
transitive verb
de·chlo·ri·nate (ˈ)dē-ˈklōr-ə-ˌnāt, -ˈklȯr-
dechlorinated; dechlorinating
: to remove chlorine from
dechlorinate water