hydronium ion

[hahy-droh-nee-uh m]

noun

the hydrogen ion bonded to a molecule of water, H3O+, the form in which hydrogen ions are found in aqueous solution.

Origin of hydronium ion

< German Hydronium (1907), contraction of Hydroxonium; see hydro-2, oxonium ion
Also called oxonium ion.

oxonium ion

noun Chemistry.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for oxonium ion

hydronium ion

noun

chem another name for hydroxonium ion

Word Origin for hydronium ion

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