Authority to hear appeals of cases arising in a particular geographic area or sphere of the law. The Supreme Court has appellate jurisdiction over all cases arising under the Constitution of the United States. See also original jurisdiction.
Appellate jurisdiction refers to the power of a court to review and potentially modify the decisions made by another court or tribunal. The review process is known as an appeal, and is normally initiated by an action of the party who is dissatisfied with the decision of the lower court.