Definition of morphinan in English:

morphinan

(also morphinane)

Pronunciation /ˈmɔːfɪnan/ /ˈmɔːfɪnən/

noun

Pharmacology
  • An oily liquid imine, C ₁₆ H ₂₁ N, whose tetracyclic structure is the basis of that of morphine and related alkaloids.

Origin

1940s; earliest use found in Chemical Abstracts. From German Morphinan from Morphin + -an.