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pyrogallol |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Pyrogallol \Pyr`o*gal"lol\, n. [Pyrogallic + -ol.] (Chem.) A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also {pyrogallic acid}. It is a strong reducer, and is used as a developer in photography and in the production of certain dyes.
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