a salt of hydrofluoric acid consisting of two elements, one of which is fluorine, as sodium fluoride, NaF.
a compound containing fluorine, as methyl fluoride, CH3F.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use fluoride in a sentence
This cascade involved steps that degraded the rest of the chemical into fluoride ions and smaller carbon-containing products, leaving behind virtually no harmful by-products.Common, cheap ingredients can break down some ‘forever chemicals’ | Jude Coleman | August 18, 2022 | Science News
They say that some of these sites are still dangerous because they’re leeching substances such as fluoride and cyanide.A North Carolina town struggles under the toxic shadow of the company that built it | Emily Cataneo/Undark | December 17, 2021 | Popular-Science
Alcoa has discharged fluoride and cyanide into this lake and nearby Little Mountain Creek for years, said Lauer.A North Carolina town struggles under the toxic shadow of the company that built it | Emily Cataneo/Undark | December 17, 2021 | Popular-Science
If you’re more prone to cavities, toothpastes and mouth rinses that contain fluoride may be better.Brush up on how to care for your teeth with these tips from dentists | Allyson Chiu | June 17, 2021 | Washington Post
Especially if your mouthwash contains fluoride, you’ll want the wash to sit on your teeth as you go about your day.
As an example of good science-and-society policymaking, the history of fluoride may be more of a cautionary tale.
fluoride first entered an American water supply through a rather inelegant technocratic scheme.
Really, is it any wonder that fluoride should freak people out?
And, in the case of fluoride, at least, that doubt might actually be justified.
Placed in drinking water, fluoride can serve people who otherwise have poor access to dental care.
Put into this vessel a small quantity of fluoride of calcium, and mix it with sulphuric acid.Harper's Young People, November 30, 1880 | Various
Acid sulphuric, a sufficient quantity to decompose the ammonia fluoride and making the mixture of a semi-fluid consistency.Secrets of Wise Men, Chemists and Great Physicians | William K. David
It attacks silica, forming fluoride of silicon, which is a gas.
Calcium fluoride must be first converted into sulphate by evaporation in a platinum dish with sulphuric acid.
It occurs less abundantly as cryolite (Na3AlF6), a fluoride of aluminium and sodium, which is used in glass-making.
British Dictionary definitions for fluoride
any salt of hydrofluoric acid, containing the fluoride ion, F –
any compound containing fluorine, such as methyl fluoride
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
Scientific definitions for fluoride
A compound containing fluorine and another element or radical. Fluorine combines readily with nearly all the other elements, except the noble gases, to form fluorides. In some countries, fluoride is added to the drinking water as a preventive measure against tooth decay.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for fluoride
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.