\Ap*pel"lant\, a. [L. appellans, p. pr. of appellare; cf. F. appelant. See {Appeal}.] Relating to an appeal; appellate. ``An appellant jurisdiction.'' --Hallam. {Party appellant} (Law), the party who appeals; appellant; -- opposed to {respondent}, or {appellee}. --Tomlins.
\Ap*pel"lant\, n. 1. (Law) (a) One who accuses another of felony or treason. [Obs.] (b) One who appeals, or asks for a rehearing or review of a cause by a higher tribunal. 2. A challenger. [Obs.] --Milton. 3. (Eccl. Hist.) One who appealed to a general council against the bull Unigenitus. 4. One who appeals or entreats.