Definition of protopine in English:

protopine

noun

Chemistry
  • A white crystalline alkaloid present in many plants, especially of the families Papaveraceae and Fumariaceae.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From German Protopin from proto- + op- (in Opium, in which protopine was first found) + -in.

Pronunciation

protopine

/ˈprəʊtəpiːn/