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Meaning of helleborein

hel•le•bo•re•in

Pronunciation: (hel"u-bôr'ē-in, -bōr'-), [key]
— n.
  1. a yellow, crystalline, water-soluble, poisonous solid, CHO, obtained from the rhizome and root of certain hellebores, and used in medicine chiefly as a heart stimulant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.