Source : Webster's Revised Unabridged Dictionary (1913)

Verditer \Ver"di*ter\, n. [F. vert-de-terre, literally, green of
   earth.] (Chem.)
   (a) Verdigris. [Obs.]
   (b) Either one of two pigments (called {blue verditer}, and
       {green verditer}) which are made by treating copper
       nitrate with calcium carbonate (in the form of lime,
       whiting, chalk, etc.) They consist of hydrated copper
       carbonates analogous to the minerals azurite and
       malachite.

   {Verditer blue}, a pale greenish blue color, like that of the
      pigment verditer.