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fluoridate

American  
[floor-i-deyt, flawr-, flohr-] / ˈflʊər ɪˌdeɪt, ˈflɔr-, ˈfloʊr- /

verb (used with object)

fluoridated, fluoridating
  1. to introduce a fluoride into.

    to fluoridate drinking water.


fluoridate British  
/ ˈflʊərɪˌdeɪt /

verb

  1. to subject (water) to fluoridation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

fluoridate Scientific  
/ flrĭ-dāt′ /
  1. To add fluorine or a fluoride to something, especially to drinking water in order to prevent tooth decay.


Other Word Forms

Etymology

Origin of fluoridate

First recorded in 1945–50; back formation from fluoridation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

State and local authorities decide for themselves whether to fluoridate the water supply.

From Los Angeles Times Jan. 6, 2025

Towns that fluoridate must maintain levels within the state’s recommendations and submit monthly reports to the state Health Department.

From Seattle Times Oct. 8, 2022

Nashua, with 87,000 residents, is the largest city in the state that doesn’t fluoridate its public water system.

From Washington Times Oct. 12, 2015

In 2013, citizens in Portland, Ore., one of only a few major American cities that don’t fluoridate, blocked a plan by local officials to do so.

From Washington Post Feb. 12, 2015

“The fact that we collected so many signatures shows the citizens of Portland were really upset that they were going to fluoridate without a public vote,” says Kellie Barnes, spokeswoman for Clean Water Portland.

From Slate May 17, 2013

The program was so successful in improving dental health that by 1960, almost one-quarter of Americans were drinking from taps with fluoridated water.

From The Wall Street Journal Apr. 22, 2026

All the research on whether fluoride in water is associated with IQ is observational, because you can’t really randomize people to drink fluoridated water, at least over any kind of span of time.

From Slate Jan. 16, 2025

As of 2012, two-thirds of Americans had access to fluoridated tap water.

From Los Angeles Times Nov. 22, 2024

In England, about one in 10 people has fluoridated drinking water.

From BBC Nov. 15, 2024

You can smell the sprinkler mist through the open window—mildly chlorinated, heavily fluoridated.

From "Challenger Deep" by Neal Shusterman

Prof Anne-Marie Glenny, also from the University of Manchester, said the widespread availability of fluoride toothpaste made the impact of fluoridating water less significant.

From BBC Mar. 7, 2025

While fluoridating municipal water is voluntary, towns that do must maintain levels within the state’s recommendations and submit monthly reports to the state Health Department, according to state officials.

From Seattle Times Oct. 20, 2022

Seymour, whose young daughter drinks city water, would “honestly be more concerned if there was a decision to stop fluoridating our water,” she said.

From Washington Post Aug. 19, 2019

Eleven small cities or towns have opted out of fluoridating their water this year, including Fairbanks, Alaska, which acted after much deliberation and a comprehensive evaluation by a panel of scientists, doctors and dentists.

From New York Times Oct. 13, 2011

Dr. Muhler, who developed Crest, the first patented stannous-fluoride toothpaste, is a staunch supporter of fluoridating water supplies.

From Time Magazine Archive

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