[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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.