[pahy-ruh-gal-awl, -ol, -guh-lawl, -lol]
- a white, crystalline, water-soluble, poisonous, solid, phenolic compound, C6H3(OH)3, obtained by heating gallic acid and water: used chiefly as a developer in photography, as a mordant for wool, in dyeing, and in medicine in the treatment of certain skin conditions.
Origin of pyrogallol
Also called pyrogallic acid.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a white lustrous crystalline soluble phenol with weakly acidic properties; 1,2,3-trihydroxybenzene: used as a photographic developer and for absorbing oxygen. Formula: C 6 H 3 (OH) 3
C20: from pyro- + gall (ic)² + -ol 1
pyrogallol(pī′rō-găl′ôl′, -ōl′, -gô′lôl′, -lōl′)
- A white, toxic crystalline phenol used as a photographic developer and to treat certain skin diseases.pyrogallic acid