Definition of helleboresin in English:

helleboresin

noun

Chemistry
rare
  • A toxic alkaloid which is the aglycone of helleborin.

Origin

Late 19th century; earliest use found in Henry Watts (1815–1884), chemist. From German Helleboresin, apparently from Helleborin with unexplained insertion of -es-.

Pronunciation

helleboresin

/hɛlɪˈbɔːrɪsɪn/