polychromatic acid

1 definition found

polychromatic acid - Collaborative International Dictionary of English v.0.48 :

  Polychromatic \Pol`y*chro*mat"ic\, a. [Poly- + chromatic.]
     Showing a variety, or a change, of colors.
     [1913 Webster]
  
     Polychromatic acid (Old Chem.), a substance obtained by the
        action of nitric acid on aloes.
        [1913 Webster]