fluoride

noun

often attributive
1
: a compound of fluorine
2
: the monovalent anion of fluorine

Examples of fluoride in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But note that this method will not remove fluoride or dissolved salts. Samantha Johnson, Martha Stewart, 6 Feb. 2026 Oral care has focused almost entirely on fluoride for decades, Hoss said, but fixating on any single ingredient misses the real drivers of oral health. Andrea Kane, CNN Money, 5 Feb. 2026 Meyers said the only actual safety issue now being reported is that the powdered fluoride bags recently delivered to the treatment plant by outside contractors sometimes have cuts in the plastic. Barbara Henry, San Diego Union-Tribune, 22 Jan. 2026 And the National Toxicity Program, which is the ultimate arbiter of the toxicity of environmental exposures, have found that even small exposures to fluoride reduce IQ by a point, a point-and-a-half, and the larger exposures by much more. Will Carless, USA Today, 22 Jan. 2026 See All Example Sentences for fluoride

Word History

First Known Use

1826, in the meaning defined at sense 1

Time Traveler
The first known use of fluoride was in 1826

Browse Nearby Words

Cite this Entry

“Fluoride.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluoride. Accessed 14 Feb. 2026.

Kids Definition

fluoride

noun
flu·​o·​ride
ˈflu̇(-ə)r-ˌīd
: a compound of fluorine with another element or chemical group

Medical Definition

fluoride

noun
flu·​o·​ride ˈflu̇(-ə)r-ˌīd How to pronounce fluoride (audio)
1
: a compound of fluorine with a more electropositive element or radical
2
: the monovalent anion of fluorine
fluoride adjective

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