# dioxygen

> English word · Noun · IPA /daɪˈɒksɪdʒən/

## Definitions
1. Diatomic oxygen: the normal allotrope of oxygen, having two atoms per molecule.
2. Two atoms of oxygen in a molecule.

## Etymology
From di- + oxygen.

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