Word.ws English Dictionary

protopine

protopine noun: a benzylisoquinoline alkaloid occurring in plants of the family Papaveraceae that has partial agonism for mu and delta opioid receptors, these effects are nalaxone reversible.

Noun

protopine (usually uncountable, plural protopines)

  1. (usually) A benzylisoquinoline alkaloid occurring in plants of the family Papaveraceae that has partial agonism for mu and delta opioid receptors, these effects are nalaxone reversible.

Forms of protopine

pluralprotopines

Origin of protopine

From proto- + opium + -ine.

Questions about protopine

What does protopine mean?
Protopine means a benzylisoquinoline alkaloid occurring in plants of the family Papaveraceae that has partial agonism for mu and delta opioid receptors, these effects are nalaxone reversible.
What part of speech is protopine?
Protopine is a noun.
What is the plural of protopine?
The plural of protopine is protopines.

Words near protopine in the dictionary

  1. protophytes
  2. protophytic
  3. protophytology
  4. protopilgrimage
  5. protopilgrimages
  6. protopine
  7. protopines
  8. protoplanet
  9. protoplanetary
  10. protoplanetary disc
  11. protoplanetary discs

Source and license

Adapted from Wiktionary: protopine (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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