English
acetyl
aceto- + -yl.
A compound of acētum ‘vinegar’ + ὕλη ‘substance’
Proto-Indo-European *h₂eḱ- ‘sharp’
Proto-Indo-European *h₂eḱéh₁yeti
Proto-Italic *akēō
Latin aceō ‘to be sour’
Latin acēscō ‘to become sour, to turn sour’
Latin acētum ‘vinegar’
Proto-Indo-European *swel- ‘firewood, wood, beam’
Ancient Greek ὕλη ‘substance’
Today it means
noun The univalent radical CH₃CO- derived from acetic acid.
Language periods are conventional ranges, not dates for this word.
Etymograph / acetyl