gallic acid Hear it!

gallic acid definition

gallic acid

a nearly colorless, crystalline acid, (OH)CHCOOH, prepared from tannins, etc. and used in photography and the manufacture of inks, dyes, etc.

Etymology: Fr gallique < galle, gall

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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