Help Wordnik hunt for a million missing words by backing our Kickstarter!


from Wiktionary, Creative Commons Attribution/Share-Alike License

  • 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine
  • n. A byproduct of synthetic heroin, or MPPP, which causes Parkinsonian symptoms in users.
  • n. A neurotoxin which degrades into MPP+ after crossing the blood brain barrier, which causes a degredation of the dopaminergic neurons within the substantia nigra.


Sorry, no etymologies found.



Log in or sign up to get involved in the conversation. It's quick and easy.