- the addition of about one part per million of fluorides to the public water supply as a protection against tooth decay
WordReference Random House Unabridged Dictionary of American English © 2026
fluor•i•da•tion
(flŏŏr′i dā′shən, flôr′-, flōr′-),USA pronunciation n.
- Chemistry, Dentistrythe addition of fluorides to the public water supply to reduce the incidence of tooth decay.
- fluoride + -ation 1900–05
Collins Concise English Dictionary © HarperCollins Publishers::
fluoridation /ˌflʊərɪˈdeɪʃən/ n
fluor•i•date /ˈflʊrɪˌdeɪt/USA pronunciation
v. [~ + object], -dat•ed, -dat•ing.
WordReference Random House Unabridged Dictionary of American English © 2026- Chemistryto add fluorides to (a water supply) to reduce tooth decay.
fluor•i•date
(flŏŏr′i dāt′, flôr′-, flōr′-),USA pronunciation v.t., -dat•ed, -dat•ing.
- Chemistryto introduce a fluoride into:to fluoridate drinking water.
- back formation from fluoridation 1945–50
'fluoridation' also found in these entries (note: many are not synonyms or translations):