1. a device or substance that removes impurities or contaminants

Examples

• The air purifier helped reduce allergens in the bedroom.
• We installed a water purifier to improve the taste of our tap water.
• The HEPA purifier removes 99% of airborne particles.
• She bought a portable air purifier for her office.
• The water purifier uses activated carbon to filter out chemicals.
• Many households rely on purifiers to ensure clean drinking water.