Gallic Acid Definition

gălĭk, gôlĭk
A nearly colorless, crystalline acid, (OH)3C6H2COOH, prepared from tannins, etc. and used in photography and the manufacture of inks, dyes, etc.
Webster's New World

(chemistry) A phenolic carboxylic acid, 3,4,5-trihydroxybenzoic acid, found in galls, tea, the bark of some trees etc; a constituent of tannin.


Origin of Gallic Acid

  • French acide gallique from galle plant gall gall3

    From American Heritage Dictionary of the English Language, 5th Edition

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gallic acid