Acetoin

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
The compound 3-hydroxybutanone CH₃-CO-CH(OH)-CH₃ that is one of the constituents of the flavour of butter countable, uncountable

Etymology

aceto- + -in

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