Chlorinated means treated with a chemical that kills germs. Chlorinated water, a chlorinated pool, chlorinated chicken.
The smell people call chlorine in a pool is not chlorine itself but chloramines, formed when it reacts with sweat and urine — so a strongly smelling pool is a dirty one. Chlorinated drinking water is one of the great public health measures of the last century.
1adjectivechlorinatedTreated with a chemical that kills germs.
“My eyes sting after swimming in chlorinated water.”
chlorinated is a treatment.
chlorinate comes from chlorine + -ate.
Etymology from Wiktionary, CC BY-SA