Definition of nalbuphine in English:

nalbuphine

Pronunciation /ˈnalbjʊfiːn/

noun

Pharmacology
  • A synthetic opioid antagonist which is very similar to morphine in chemical structure and is given by injection (usually in the form of its hydrochloride) as an analgesic; (−)-(5 R,6 S,14 S)-9a-cyclobutylmethyl-4,5-epoxymorphinan-3,6,14-triol, C₂₁ H₂₇ NO₄.

Origin

1960s; earliest use found in WHO Chronicle. Alteration of nalorphine, with substitution of -bu- for -or-.