Definition of retinyl in English:

retinyl

Pronunciation /ˈrɛtɪnɪl/ /ˈrɛtɪnʌɪl/

noun

Biochemistry
  • The radical —C₂₀ H₂₈, 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.