The Collaborative International Dictionary of English v.0.48:

Appellate \Ap*pel"late\, a. [L. appelatus, p. p. of appellare.]
   Pertaining to, or taking cognizance of, appeals. "Appellate
   jurisdiction." --Blackstone. "Appellate judges." --Burke.
   [1913 Webster]

   Appelate court, a court having cognizance of appeals.
      [1913 Webster]