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fluoridation [ˌflʊǝrɪ'deɪʃǝn] n
environ.	fluoridering
fluoridation The addition of the fluorine ion to municipal water supplies in a final concentration of 0.8-1.6 ppm (parts per million) to help prevent dental caries in children, addition of fluor(ide, ions) to (drinking) water [ˌflʊǝrɪ'deɪʃǝn] n
environ.	fluoridering