Anything diocesan relates to a diocese, which is an area that a senior Catholic priest is in charge of. You might see it in phrases like “diocesan newspapers,” “diocesan policies,” or “diocesan officials.”

If you hear this word rather than see it, its relationship to its root (diocese) may not be obvious because of the shift in stress. Diocesan is simply the adjective of diocese, the territorial jurisdiction of a Catholic bishop. The immediate root is from a Latin word for an “administrative division,” and that meaning is still important. All diocesan affairs relate to how the diocese is organized and run by Catholic officials and clergy under the bishop.

Definitions of diocesan
  1. noun
    a bishop having jurisdiction over a diocese
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    type of:
    a senior member of the Christian clergy having spiritual and administrative authority; appointed in Christian churches to oversee priests or ministers; considered in some churches to be successors of the twelve Apostles of Christ
  2. adjective
    belonging to or governing a diocese
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