Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A colorless crystalline polyphenol, C7H6O5, derived from certain tannins and used as a tanning agent, as an ink dye, in photography, and in pharmaceuticals.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry a
phenolic carboxylic acid , 3,4,5-trihydroxybenzoic acid, found ingalls ,tea , thebark of sometrees etc; a constituent oftannin - noun chemistry the supposed acid H3GaO3, the acid form of the
amphoteric gallium hydroxide Ga(OH)3, known only as alkali metal salts
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a colorless crystalline acid obtained from tannin
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[French acide gallique, from galle, plant gall; see gall.]
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