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oxonium ion

noun, Chemistry.

hydronium ion

[hahy-droh-nee-uh m] /haɪˈdroʊ ni əm/
the hydrogen ion bonded to a molecule of water, H 3 O + , the form in which hydrogen ions are found in aqueous solution.
Also called oxonium ion.
Origin of hydronium ion
< German Hydronium (1907), contraction of Hydroxonium; see hydro-2, oxonium ion Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for oxonium ion

hydronium ion

(chem) another name for hydroxonium ion
Word Origin
C20: from hydro- + (amm)onium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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