ˈemədə̇n, -d ə n noun
( -s )
Etymology: International Scientific Vocabulary emodi- (from New Latin emodi, specific epithet of Rheum emodi ) + -in
: an orange crystalline phenolic compound C 14 H 4 O 2 (OH) 3 CH 3 derived from anthraquinone and obtained especially from plants (as rhubarb, cascara buckthorn, and senna) yielding cathartic substances — called also frangula emodin