noun Pharmacology.
a white or yellow, crystalline, water-soluble alkaloid, C 20 H 19 NO 5 , derived from barberry or goldenseal, used as an antipyrotic, antibacterial, and stomachic.

1860–65; < Neo-Latin Berber(is) (see berberidaceous) + -ine1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
berberine (ˈbɜːbəˌriːn)
a yellow bitter-tasting alkaloid obtained from barberry and other plants and used medicinally, esp in tonics. Formula: C20H19NO5
[C19: from German Berberin, from New Latin berberisbarberry]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

berberine ber·ber·ine (bûr'bə-rēn')
A bitter-tasting yellow plant alkaloid used as an antipyretic and antibacterial agent.

The American Heritage® Stedman's Medical Dictionary
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