Pyrogallol

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pyrogallol \Pyr`o*gal"lol\, n. [Pyrogallic + -ol.] (Chem.)
     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.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  pyrogallol
       n : a toxic white lustrous crystalline phenol used to treat
           certain skin diseases and as a photographic developer
           [syn: {pyrogallic acid}]