a poisonous, white, crystalline phenol, CH(OH), produced by heating gallic acid: used in medicine, as a developer in photography, etc.
Origin of pyrogallolpyro- + gall(ic acid) + -ol
A white, toxic crystalline phenol, C6H3(OH)3, used as a photographic developer and to treat certain skin diseases. Also called pyrogallic acid .
Origin of pyrogallolpyro- gall(ic acid) -ol 1