/ Dictionary / Index H hydrastis: Meaning and Definition of Find definitions for: hy•dras•tis Pronunciation: (hī-dras'tis), [key] — n. goldenseal (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hydrastis (Thesaurus) hydrastinine hydrate Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language