Definition of retinyl in English:

retinyl

noun

Biochemistry
  • The radical —C₂₀H₂₈, derived from retinol (vitamin A₁) by the loss of the hydroxyl group. Usually attributive or as a formative element in names.

Origin

1960s; earliest use found in Biochimica et Biophysica Acta. From retin- + -yl.