sodium fluoride

American  

noun

1. a colorless, crystalline, water-soluble, poisonous solid, NaF, used chiefly in the fluoridation of water, as an insecticide, and as a rodenticide.

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sodium fluoride Scientific  

1. A colorless, crystalline salt used to fluoridate water and treat tooth decay. It is also used as an insecticide and a disinfectant. Chemical formula: NaF.

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Etymology

Origin of sodium fluoride

First recorded in 1900–05

Example Sentences

See Examples For:

sodium fluoride

In 1945, Grand Rapids, Mich., played host to a pilot project that added sodium fluoride to the town’s water supply.

From The Wall Street Journal ● Apr. 22, 2026

“However, this is still not likely as there was at least some sodium fluoride which would help preserve the sample.”

From Los Angeles Times ● Mar. 19, 2026

The team also demonstrated that the sodium fluoride generated through this method can be used immediately, without additional purification, to synthesize other valuable fluorine-containing compounds used in pharmaceuticals, diagnostic tools, and specialty chemicals.

From Science Daily ● Nov. 27, 2025

Solid calcium fluoride can also be prepared by the reaction of aqueous solutions of calcium chloride and sodium fluoride, yielding aqueous sodium chloride as the other product.

From Textbooks ● Feb. 14, 2019

To remove the last traces of hydrofluoric acid, advantage is taken of the fact that fused sodium fluoride combines with the free acid with great energy to form the double fluoride HF.NaF.

From Scientific American Supplement, No. 832, December 12, 1891 by Various