Bible Dictionaries
Pyrogallol
Webster's Dictionary
(n.) 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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Bibliography Information
Webster, Noah. Entry for 'Pyrogallol'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/p/pyrogallol.html. 1828.