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Definition of: peroxide
(pə·rok′sīd) noun Chem.
1. An oxide having a larger proportion of oxygen than any other oxide of the same series: distinguished from protoxide.
2. Hydrogen peroxide. Also per·ox′id (-sid).
—v.t. ·id·ed, ·id·ing To treat with peroxide; bleach, as hair, with peroxide.
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