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Meaning of hydrastine

hy•dras•tine

Pronunciation: (hī-dras'tēn, -tin), [key]
— n. Pharm.
  1. an alkaloid, CHNO, that is extracted from the roots of goldenseal and forms prismatic crystals: used as an astringent and to inhibit uterine bleeding.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.