acetyl.
The univalent radical CH₃CO- derived from acetic acid.
Meaning & usage
The univalent radical CH₃CO- derived from acetic acid.
Where this word comes from
Etymology tree Proto-Indo-European *h₂eḱ- Proto-Indo-European *-éh₁ti Proto-Indo-European *-yeti Proto-Indo-European *-éh₁yeti Proto-Indo-European *h₂eḱéh₁yeti Proto-Italic *akēō Latin aceō Proto-Indo-European *-sḱéti Proto-Italic *-skō Latin -scō Latin acēscō Proto-Indo-European *-tós Proto-Italic *-tos Latin -tus Latin acētumder. English aceto- English acet- Proto-Indo-European *swel-der.? Ancient Greek ῡ̔́λη (hū́lē)der. Frenchder. English -yl English acetyl aceto- + -yl. From Latin acētum (“vinegar”) + Ancient Greek ὕλη (húlē, “substance”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.