The Collaborative International Dictionary of English v.0.48:

Cadaveric \Ca*dav"er*ic\, a.
   Of, pertaining to, or resembling, a corpse, or the changes
   produced by death; cadaverous; as, cadaveric rigidity.
   --Dunglison.
   [1913 Webster]

   Cadaveric alkaloid, an alkaloid generated by the processes
      of decomposition in dead animal bodies, and thought by
      some to be the cause of the poisonous effects produced by
      the bodies. See Ptomaine.
      [1913 Webster] Cadaverine