1. to treat or combine with chlorine, especially to disinfect water

Examples

• The city chlorinates the drinking water to kill harmful bacteria.
• Pool owners must chlorinate their swimming pools regularly.
• The water treatment plant chlorinates millions of gallons daily.
• We need to chlorinate the well water before it’s safe to drink.
• The maintenance crew will chlorinate the hot tub this afternoon.
• Many countries chlorinate their public water supply systems.