n. & v.
n. Chem. 1 a = hydrogen peroxide. b (often attrib.) a solution of hydrogen peroxide used to bleach the hair or as an antiseptic. 2 a compound of oxygen with another element containing the greatest possible proportion of oxygen. 3 any salt or ester of hydrogen peroxide.
v.tr. bleach (the hair) with peroxide.
[ PER- + OXIDE ]