/ Dictionary / Index H hydrastine: Meaning and Definition of Find definitions for: hy•dras•tine Pronunciation: (hī-dras'tēn, -tin), [key] — n. Pharm. 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. hydrase hydrastinine Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language