# oxonium

> English word · Noun · IPA /ɒkˈsəʊnɪ.əm/

## Definitions
1. Any univalent oxygen cation derived from water, the simplest of which is the hydronium ion (H₃O⁺).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/oxonium