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nalbuphine

American  
[nal-byoo-feen] / ˈnæl byuˌfin /

noun

Pharmacology.
  1. a potent synthetic narcotic, C 2 1 H 2 7 NO 4 , used as an analgesic for moderate to severe pain.


Etymology

Origin of nalbuphine

By rearrangement of parts of its chemical name