<P> As of January 2015, in the Catholic Church there are 2,851 regular dioceses: 1 papal see, 641 archdioceses (including 9 patriarchates, 4 major archdioceses, 551 metropolitan archdioceses, 77 single archdioceses) and 2,209 dioceses in the world . </P> <P> In the Eastern rites in communion with the Pope, the equivalent unit is called an eparchy . </P> <P> The Eastern Orthodox Church calls dioceses episkopē in the Greek tradition and eparchies in the Slavic tradition . </P> <P> After the Reformation, the Church of England retained the existing diocesan structure which remains throughout the Anglican Communion . The one change is that the areas administered under the Archbishop of Canterbury and Archbishop of York are properly referred to as provinces, not archdioceses . This usage is relatively common in the Anglican Communion . </P>

What in greek orthodox church is a diocese