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Definition of Cathartin
1. n. The bitter, purgative principle of senna. It is a glucoside with the properties of a weak acid; -- called also cathartic acid, and cathartina.
Definition of Cathartin
1. Noun. (organic compound) The bitter purgative principle of senna. It is a glucoside with the properties of a weak acid. ¹
¹ Source: wiktionary.com