pyrogallol Meaning, Definition & Usage
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noun a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer
pyrogallic acid.
WordNet
Pyr`o*gal"lol noun
Etymology
Definitions
(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.