The
English word
eparchy is an
anglicized term that comes from the original
Greek word (, ). It is an
abstract noun, formed with an
intensive prefix (, , + , , ). It is commonly
Latinized as
eparchia. The term can be loosely translated as the rule over something (literally: an overlordship). The term had various meanings and multiple uses throughout history, mainly in politics and administration, starting from the
Hellenistic period, and continuing throughout the
Roman era. In the
Greco-Roman world, it was used as a Greek equivalent for the
Latin term
provincia, denoting
province, the main administrative unit of the
Roman Empire. The
same use was employed in the early
Byzantine Empire until major administrative reforms that were undertaken between the 7th and 9th centuries, abolishing the old provincial system. In modern times, the term was also employed within administrative systems of some countries, like
Greece and
Cyprus. Since it was commonly used as the main Greek designation for an administrative province of the Roman Empire, the term
eparchy consequently gained an additional use among Greek-speaking
Christians, denoting
ecclesiastical structures on the provincial level of Church administration, within
Eastern Christianity. Such terminological borrowing resulted from the final consolidation of the provincial (metropolitan) system in the 4th century. The
First Ecumenical Council (325) confirmed (Canon IV) that all bishops of each civil province should be grouped in one
ecclesiastical province, headed by a
metropolitan (bishop of the provincial capital). Since civil provinces were called eparchies in Greek, the same term was used to define ecclesiastical provinces. Such use became customary, and metropolitan provinces came to be known as
eparchies. ==Eastern Orthodox Church==