hydronium ion

[ hahy-droh-nee-uh m ]
/ haɪˈdroʊ ni əm /

noun

the hydrogen ion bonded to a molecule of water, H3O+, 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

Definition for oxonium ion (2 of 2)

oxonium ion

noun Chemistry.

British Dictionary definitions for oxonium ion

hydronium ion
/ (haɪˈdrəʊnɪəm) /

noun

chem another name for hydroxonium ion

Word Origin for hydronium ion

C20: from hydro- + ( amm) onium