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Meaning of esculin

es•cu•lin

Pronunciation: (es'kyu-lin), [key]
— n. Chem.
  1. a white, crystalline, slightly water-soluble glucoside, CHO, obtained from the bark of the common horse chestnut and used chiefly in skin preparations as a protective against sunburn.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.