noun
- the addition of fluorides to the public water supply to reduce the incidence of tooth decay.
noun
- the addition of about one part per million of fluorides to the public water supply as a protection against tooth decay
1904, from fluoride + -ation. In reference to adding traces of fluoride to drinking water as a public health policy, from 1949.
n.
- The addition of a fluorine compound to drinking water for the purpose of reducing tooth decay.