1. to remove chlorine or chlorine compounds from (water, a substance, etc.)
Usage: transitive verb; commonly used in water treatment and environmental contexts

Examples

• The water treatment plant must dechlorinate the tap water before releasing it into the river.
• Aquarium owners dechlorinate tap water to make it safe for fish.
• The facility uses activated carbon to dechlorinate the swimming pool water.
• Municipal systems dechlorinate wastewater to meet environmental regulations.
• You can dechlorinate water by letting it sit in sunlight for several hours.