Definitions
1.nounA divalent radical or anion containing two oxygen atoms linked by a covalent bond; any substance containing this group which yields hydrogen peroxide when treated with an acid
2.nounHydrogen peroxide, especially an aqueous solution used as a bleach
3.nounAny unstable compound or general formula R-O-O-R'
4.verbTo treat (something) with hydrogen peroxide, especially hair in order to bleach it