a white lustrous crystalline soluble phenol with weakly acidic properties; 1,2,3-trihydroxybenzene: used as a photographic developer and for absorbing oxygen. Formula: C6H3(OH)3
Derived forms
pyrogallic (ˌpyroˈgallic)
adjective
Word origin
C20: from pyro- + gall(ic)2 +-ol1
pyrogallol in American English
(ˌpaɪrəˈgælˌɔl; ˌpaɪrəˈgælˌoʊl)
noun
a poisonous, white, crystalline phenol, C6H3(OH)3, produced by heating gallic acid: used in medicine, as a developer in photography, etc.