Source : Webster's Revised Unabridged Dictionary (1913)

Acetone \Ac"e*tone\, n. [See {Acetic}.] (Chem.)
   A volatile liquid consisting of three parts of carbon, six of
   hydrogen, and one of oxygen; pyroacetic spirit, -- obtained
   by the distillation of certain acetates, or by the
   destructive distillation of citric acid, starch, sugar, or
   gum, with quicklime.

   Note: The term in also applied to a number of bodies of
         similar constitution, more frequently called ketones.
         See {Ketone}.

Source : WordNet®

acetone
     n : the simplest ketone; a highly inflammable liquid widely used
         as an organic solvent and as material for making plastics
         [syn: {propanone}, {dimethyl ketone}]