fluoridate

UK: /ˈflʊərɪˌdeɪt/

US: /ˈflʊrɪˌdeɪt/

US: (flŏŏr′i dāt′, flôr′-, flōr′-)

Inflections of 'fluoridate' (v): (⇒ conjugate)

fluoridates

v 3rd person singular

fluoridating

v pres p

fluoridated

v past

fluoridated

v past p

WordReference Random House Learner's Dictionary of American English © 2026

fluor•i•date /ˈflʊrɪˌdeɪt/   v. [~ + object] , -dat•ed, -dat•ing. 

1. Chemistry to add fluorides to (a water supply) to reduce tooth decay.

fluor•i•da•tion, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026

fluor•i•date  (flŏŏr′i dāt′, flôr′-, flōr′-), v.t., -dat•ed, -dat•ing. 

1. Chemistry to introduce a fluoride into:
   to fluoridate drinking water.

• back formation from fluoridation 1945–50

Collins Concise English Dictionary © HarperCollins Publishers::

fluoridate / ˈflʊərɪˌdeɪt/ verb

1. to subject (water) to fluoridation
   Also: fluoridize, fluoridise / ˈflʊərɪˌdaɪz/