hydronium

noun

hy·​dro·​ni·​um hī-ˈdrō-nē-əm How to pronounce hydronium (audio)
: a hydrated hydrogen ion H3O+

Examples of hydronium in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
The movement of each electron is timed and arranged just so to cause a proton in the form of a hydronium ion, which is positively charged, to head in the opposite direction. James Somers, The New Yorker, 25 Oct. 2022

Word History

Etymology

International Scientific Vocabulary hydr- + -onium

First Known Use

1908, in the meaning defined above

Time Traveler
The first known use of hydronium was in 1908

Dictionary Entries Near hydronium

Cite this Entry

“Hydronium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydronium. Accessed 18 Nov. 2024.

Kids Definition

hydronium

noun
hy·​dro·​ni·​um hī-ˈdrō-nē-əm How to pronounce hydronium (audio)
: an ion formed by the combination of a hydrogen ion with a water molecule

Medical Definition

hydronium

noun
hy·​dro·​ni·​um hī-ˈdrō-nē-əm How to pronounce hydronium (audio)
: a hydrated hydrogen ion H3O+
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