short for hydrogen peroxide, esp when used for bleaching hair

any of a class of metallic oxides, such as sodium peroxide, Na2O2, that contain the divalent ion–O-O–

any of certain dioxides, such as manganese peroxide, MnO2, that resemble peroxides in their formula but do not contain the–O-O– ion

any of a class of organic compounds whose molecules contain two oxygen atoms bound together. They tend to be explosive

of, relating to, bleached with, or resembling peroxide

to bleach (the hair) with peroxide