'Peroxide' definitions:

Definition of 'peroxide'

From: WordNet
noun
A viscous liquid with strong oxidizing properties; a powerful bleaching agent; also used (in aqueous solutions) as a mild disinfectant and (in strong concentrations) as an oxidant in rocket fuels [syn: hydrogen peroxide, peroxide]
noun
An inorganic compound containing the divalent ion -O-O-
verb
Bleach with peroxide; "She must peroxide her hair-it looks unnaturally blond"

Definition of 'Peroxide'

From: GCIDE
  • Peroxide \Per*ox"ide\, n. (Chem.) An oxide containing more oxygen than some other oxide of the same element. Formerly peroxides were regarded as the highest oxides. Cf. Per-, 2. [1913 Webster]