hydrogen fluoride

noun

: a colorless corrosive fuming usually gaseous compound HF that yields hydrofluoric acid when dissolved in water

Examples of hydrogen 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.
These materials include copper, aluminum oxide, and hydrogen fluoride, which is used as a propellant in some rocket engines. — Leonard David, Space.com, 13 May 2026 In humans, hydrogen fluoride is a respiratory irritant that also burns skin. — Elizabeth Caldwell, Oklahoma Watch, 12 Mar. 2026 But many Inola residents are concerned about how hydrogen fluoride emissions will affect surrounding plants and livestock. — Graycen Wheeler, KOSU, 1 July 2026 The agency set up nine air quality monitors the first night after the fire broke out to check for hydrogen fluoride and particulates, two contaminants that can pose health risks, in and around the fire site and evacuation area. — Kate Bradshaw, The Mercury News, 18 Jan. 2025 See All Example Sentences for hydrogen fluoride

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of hydrogen fluoride was in 1869

Rhymes for hydrogen fluoride

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Browse Nearby Words

hydrogen electrode
hydrogen fluoride
hydrogenic
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Cite this Entry

“Hydrogen fluoride.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20fluoride. Accessed 7 Jul. 2026.

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Kids Definition

hydrogen fluoride

noun
: a colorless poisonous gas that is made up of hydrogen and fluorine and produces hydrofluoric acid when dissolved in water

Medical Definition

hydrogen fluoride

noun
: a colorless corrosive fuming usually gaseous compound HF that yields hydrofluoric acid when dissolved in water

More from Merriam-Webster on hydrogen fluoride

Britannica.com: Encyclopedia article about hydrogen fluoride

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