The Collaborative International Dictionary of English v.0.48:

Amic \Am"ic\, a. [L. ammonia + -ic.] (Chem.)
   Related to, or derived, ammonia; -- used chiefly as a suffix;
   as, amic acid; phosphamic acid.
   [1913 Webster]

   Amic acid (Chem.), one of a class of nitrogenized acids
      somewhat resembling amides.
      [1913 Webster]