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

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.

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

It melts at -83°C and boils at 19.4°C. In it are dissolved varying quantities of metallic and non-metallic fluorides, such as boron trifluoride, sodium fluoride, etc.

From Uller Uprising by Clark, John D.