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Meaning of aloin

al•o•in

Pronunciation: (al'ō-in), [key]
— n. Pharm.
  1. an intensely bitter, crystalline, water-soluble powder composed of the active principles of and obtained from aloe, used chiefly as a purgative.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.