English
acyloxyl
From acyl + oxyl.
Proto-Indo-European *h₂eḱ- ‘sharp’
Proto-Indo-European *h₂eḱéh₁yeti
Proto-Italic *akēō
Latin aceō ‘to be sour’
English acyl
Today it means
noun Any univalent radical containing an acyl functional group bonded to an oxygen atom having a free valence on the oxygen atom; RC(=O)O-
Language periods are conventional ranges, not dates for this word.
Etymograph / acyloxyl