Oxo

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A substituent oxygen atom connected to another atom by a double bond. in-compounds, uncountable
2
The game of noughts and crosses. uncountable

Synonyms

Related phrases

double bond noughts and crosses

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