fluoride

[floor-ahyd, flawr-, flohr-]

noun

Chemistry.

1. a salt of hydrofluoric acid consisting of two elements, one of which is fluorine, as sodium fluoride, NaF.

2. a compound containing fluorine, as methyl fluoride, CH 3 F.

fluoride

/ ˈflʊəˌraɪd /

noun

1. any salt of hydrofluoric acid, containing the fluoride ion, F ^–

2. any compound containing fluorine, such as methyl fluoride

fluoride

1. 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.

fluoride

1. Any of a number of naturally occurring compounds of the element fluorine. Fluorides have been found to be effective in preventing tooth decay and are routinely added to drinking water in most jurisdictions.

Word History and Origins

Origin of fluoride¹

First recorded in 1820–30; fluor- + -ide ( def. )

Example Sentences

This grinding causes the materials to react at room temperature, breaking the carbon-fluorine bonds within Teflon and producing harmless carbon along with sodium fluoride, a stable salt widely used in fluoride toothpaste.

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While fluoride toothpaste helps slow this process, the keratin-based formulation in the new study went further, completely preventing it in laboratory tests.

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With its ability to mimic natural enamel formation and strengthen teeth without fluoride, this new gel could redefine modern dentistry.

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Rinsing your mouth washes away the concentrated fluoride in the remaining toothpaste.

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In research published on October 23 in Science, the team precisely measured the energy of electrons orbiting a radium atom that was chemically bound to a fluoride atom, forming radium monofluoride.

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