v. t. [ imp. & p. p. Peroxidized p. pr. & vb. n. Peroxidizing. ] (Chem.) To oxidize to the utmost degree, so as to form a peroxide. [ 1913 Webster ]
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 ]