Oxonium may refer to:
*
Oxonium ion, any ion which contains a tricoordinated oxygen atom,
*Oxonium, an IUPAC name for the simplest oxonium ion,
hydronium
In chemistry, hydronium (hydroxonium in traditional British English) is the cation , also written as , the type of oxonium ion produced by protonation of water. It is often viewed as the positive ion present when an Arrhenius acid is dissolved ...
,
*''Oxonium'' (often abbreviated to ''Oxon.''), sometimes used in university circles as a Latin name for
Oxford University
The University of Oxford is a collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the second-oldest continuously operating u ...
in England
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