Definition of oenanthyl in US English:

oenanthyl

(also enanthyl)

noun

Chemistry
  • The acyl radical —C(O)(CH₂)₅CH₃ (also called heptanoyl); (also, now rare) the heptyl radical —(CH₂)₆CH₃. Usually attributive or a formative element in chemical names.

Origin

Mid 19th century; earliest use found in William Gregory (1803–1858), chemist and psychic investigator. From oenanth- + -yl.