| peroxide | <chemistry> An oxide containing more oxygen than some other oxide of the same element. Formerly peroxides were regarded as the highest oxides. Cf. Per-. Source: Websters Dictionary (01 Mar 1998) |
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| hydrogen peroxide | <chemical> Hydrogen peroxide is produced by vertebrate phagocytes and is used in bacterial killing (the myeloperoxidase halide system). (05 May 1997) |
| sodium peroxide | Na2O2;used externally as a paste or soap in the treatment of comedones and acne. (05 Mar 2000) |
| zinc peroxide | ZnO2;a yellowish white powder, insoluble in water and decomposed by acids; used in pharmaceutical preparations. Synonym: zinc superoxide. (05 Mar 2000) |
| urea peroxide | CH4N2O-H2O2;a white crystalline compound used in an aqueous solution as an oxidizing mouthwash. (05 Mar 2000) |