Archdiocese (noun)

1. A district or region under the jurisdiction of an archbishop.
2. The area of responsibility of an archbishop or metropolitan bishop.

Origin:

From the greek word arkhidiakonos meaning "ruler over a diocese".

Examples:

1. The archdiocese of New York includes many parishes in the state of New York.
2. The word "archdiocese" comes from the Greek word arkhidiakonos meaning "ruler over a diocese".
3. The archdiocese of Chicago is the largest in the United States.
4. Many churches in the archdiocese have been closed or merged due to declining membership.
5. The archdiocese of Boston has a rich history dating back to the colonial period.