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 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

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hydronium.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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 16 Apr. 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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