Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
Diatomic oxygen: the normal allotrope of oxygen, having two atoms per molecule.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences
Synonyms: oxygen
Antonyms: none provided
noun
Two atoms of oxygen in a molecule.
Definition source: English Wiktionary via Wiktextract
Usage: in-compounds, uncountable
Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree Proto-Indo-European *dwóh1 Proto-Indo-European *dwi- Proto-Hellenic *dwi- Ancient Greek δῐ- (dĭ-)bor. Latin di-bor. English di- Proto-Indo-European *h2eḱ-der.? Ancient Greek ὀξύς (oxús) Proto-Indo-European *ǵenh1- Proto-Indo-European *-os Proto-Indo-European *ǵénh1os Proto-Hellenic *génos Ancient Greek γένος (génos) French oxygènebor. English oxygen English dioxygen From di- + oxygen.
Across languages
2 source translations are retained for this English entry.
