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.
If the shortage continues, however, more may be forced to cut back on fluoride or to stop adding it to the water. Pien Huang, NPR, 15 Apr. 2026 The team found no difference in IQ between those exposed to fluoride in drinking water versus those who were not, according to results published in the journal Proceedings of the National Academy of Sciences (PNAS). Youri Benadjaoud, ABC News, 14 Apr. 2026 The potential for fluoride toxicity does exist, but would require consuming an amount of fluoridated water that would kill a human via water intoxication before the amount of fluoride could become harmful or deadly, according to the Cleveland Clinic. Mary Walrath-Holdridge, USA Today, 14 Apr. 2026 Since the start of 2026, lawmakers in at least 15 states have introduced bills prohibiting or limiting fluoride in public drinking water. Farrell Brenner, CBS News, 9 Mar. 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 18 Apr. 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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