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A substance extracted from the rootstock of the Polygala Senega (Seneca root), and probably identical with polygalic acid.

ined from, Polygala; specifically, designating an acrid glucoside (called polygalic acid, senegin, etc.), resembling, or possibly identical with, saponin.

er in solution, and produces a local anæstesia. Formerly called also struthiin, quilaiin, senegin, polygalic acid, etc. By extension, any one of a group of related bodies of which saponin proper is the type.