1. a chemical compound containing two oxygen atoms bonded together, especially hydrogen peroxide used as a bleach or disinfectant
Usage: chemistry term; commonly refers to hydrogen peroxide in everyday contexts

1. to bleach or lighten (hair) using peroxide
Usage: informal; often used in cosmetic contexts

Examples

• Hydrogen peroxide is a common household peroxide used for cleaning wounds.
• The dentist recommended a peroxide-based mouthwash for better oral hygiene.
• She decided to peroxide her hair for the summer.
• Peroxide is often used in industrial bleaching processes.
• The bottle of peroxide should be stored in a cool, dark place.
• Many hair salons use professional-grade peroxide for coloring treatments.