Dioxygen

//daɪˈɒksɪdʒən// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Diatomic oxygen: the normal allotrope of oxygen, having two atoms per molecule. uncountable

    "Meronym: oxygen (strict sense)"

  2. 2
    Two atoms of oxygen in a molecule. in-compounds, uncountable

Synonyms

All synonyms
molecular oxygenoxygen

Etymology

From di- + oxygen.

Related phrases

dioxygen difluoridedioxygen hexafluoroplatinate

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.