zirconiaPronunciation: /zəːˈkəʊnɪə/Definition of zirconia noun [mass noun] zirconium dioxide, a white solid used in ceramic glazes and refractory coatings, and as a synthetic substitute for diamonds in jewellery. Chemical formula: ZrO2 Origin: late 18th century: from zircon + -ia1zirconia in other Oxford dictionaries Definition of zirconia in the US English dictionary
