a. [ LL. dioecesanus: cf. F. diocésain. ] Of or pertaining to a diocese; as, diocesan missions. [ 1913 Webster ]
n. 1. A bishop, viewed in relation to his diocese; as, the diocesan of New York. [ 1913 Webster ]
2. pl. The clergy or the people of a diocese. Strype. [ 1913 Webster ]