- (chemistry) a phenolic carboxylic acid, 3,4,5-trihydroxybenzoic acid, found in galls, tea, the bark of some trees etc; a constituent of tannin
- (chemistry) the supposed acid H3GaO?3, the acid form of the amphoteric gallium hydroxide Ga(OH)3, known only as alkali metal salts
- French: acide gallique
(trans-top, acid form of amphoteric gallium hydroxide)
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