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Definition of Sanguinarine
1. Noun. (organic compound) A toxic benzylisoquinoline alkaloid found in the bloodroot (''Sanguinaria canadensis'') and certain other plants. ¹
¹ Source: wiktionary.com
Medical Definition of Sanguinarine
1. An alkaloid obtained from the bloodroot plant, Sanguinaria canadensis, used to treat and remove dental plaque. (05 Mar 2000)