verb (used with object), fluor·i·dat·ed, fluor·i·dat·ing.
- to introduce a fluoride into: to fluoridate drinking water.
verb
- to subject (water) to fluoridation
1949, back-formation from fluoridation. Related: Fluoridated; fluoridating.
- To add fluorine or a fluoride to something, especially to drinking water in order to prevent tooth decay.