Entry 1 sense Webster, 1913 Archidiaconal · Ar·chi·di·ac·o·nal · IPA /ɑːkɪdaɪˈækənəl/ 01 a. Of or pertaining to an archdeacon. 1. Of or pertaining to an archdeacon. “This offense is liable to be censured in an archidiaconal visitation.” — Johnson.