Definition of methapyrilene in English:

methapyrilene

Pronunciation /mɛθəˈpɪrɪliːn/

noun

Pharmacology
  • A pyridine derivative once used as an antihistamine and hypnotic, but later recognized to be a potent hepatic carcinogen in rats; N,N-dimethyl-N'-(2-thienylmethyl)-1,2-ethanediamine, C ₁₄ H ₁₉ N ₃ S.

Origin

1940s; earliest use found in Journal of the American Medical Association. From meth- (in methyl see note s.v. meth-) + -a- connective + pyril- + -ene.