Decanal \Dec"a*nal\ (?; 277), a. [Cf. F. d['e]canal. See {Dean}.] Pertaining to a dean or deanery. [1913 Webster] His rectorial as well as decanal residence. --Churton. [1913 Webster] {Decanal side}, the side of the choir on which the dean's tall is placed. {Decanal stall}, the stall allotted to the dean in the choir, on the right or south side of the chancel. --Shipley. [1913 Webster]