polychrest salt

1 definition found

polychrest salt - Collaborative International Dictionary of English v.0.48 :

  Polychrest \Pol"y*chrest\, n. [Gr. ? useful for many purposes;
     poly`s many + ? useful, fr. ? to use: cf. F. polychreste.]
     (Med.)
     A medicine that serves for many uses, or that cures many
     diseases. [Obs.]
     [1913 Webster]
  
     Polychrest salt (Old Med. Chem.), potassium sulphate,
        specifically obtained by fusing niter with sulphur.
        [1913 Webster]