1. That oxide of any series that contains the greatest number of oxygen atoms; applied most correctly to compounds containing an –O–O– link, as in hydrogen p. (H–O–O–H); a hydroperoxide is R–O–O–H. 2. The O22− ion. 3. Any member of a class of metallic oxides that contain the p. ion.
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per·ox·ide pə-'räk-.sīd n a compound (as hydrogen peroxide) in which oxygen is visualized as joined to oxygen
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per·ox·ide (pər-okґsīd) that oxide of any element which contains more oxygen than any other. More correctly applied to compounds having such linkage as
OO; for instance, hydrogen peroxide, HOOH.
Medical dictionary. 2011.