IPA: //ˈklɔːrɪneɪtər//
KK: /ˈklɔrɪˌneɪtər/
A device or substance that adds chlorine to water, often used in swimming pools or water treatment to kill bacteria and other harmful organisms.
The chlorinator automatically adds chlorine to the pool to keep the water clean and safe for swimming.
Chlorinator → It is formed from "chlorine" (from Greek "chloros", meaning green) and "-ator" (meaning one who or that which). The word "chlorinator" refers to a device or agent that introduces chlorine, often used in water treatment to purify or disinfect.
Think of a device that introduces 'green' ('chloros') to purify water — that's what a chlorinator does.