di·oc·e·san /daɪˈɑsəsən ||ˈdaɪəˌsisṇ/
  (a.)主教管區的教區主教
  Di·oc·e·san a.  Of or pertaining to a diocese; as, diocesan missions.
  Di·oc·e·san, n.
  1. A bishop, viewed in relation to his diocese; as, the diocesan of New York.
  2. pl. The clergy or the people of a diocese.
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  diocesan
       adj : belonging to or governing a diocese
       n : a bishop having jurisdiction over a diocese