Usually means: Alkaloid found in several plants.
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We found 11 dictionaries that define the word protopine:

General (9 matching dictionaries)
  1. protopine: Wordnik
  2. protopine: Wiktionary
  3. protopine: Dictionary.com
  4. Protopine: Wikipedia, the Free Encyclopedia
  5. Protopine: Online Plain Text English Dictionary
  6. protopine: Webster's Revised Unabridged, 1913 Edition
  7. Protopine: AllWords.com Multi-Lingual Dictionary
  8. protopine: FreeDictionary.org
  9. Protopine: TheFreeDictionary.com

Medicine (2 matching dictionaries)
  1. protopine: Merriam-Webster Medical Dictionary
  2. online medical dictionary (No longer online)

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Definitions from Wiktionary (protopine)

▸ noun:  (biochemistry) A benzylisoquinoline alkaloid occurring in plants of the family Papaveraceae that acts as an opioid analgesic.

Similar:
allocryptopine, papaverine, papaveretum, phenoperidine, noscapine, psychotridine, desmethylprodine, opiorphin, properidine, nororientaline, more...

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Similar:
allocryptopine, papaverine, papaveretum, phenoperidine, noscapine, psychotridine, desmethylprodine, opiorphin, properidine, nororientaline, more...



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