Hypertext Webster Gateway: "tetrarchy"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Tetrarchy \Tet"rarch*y\, n.; pl. {Tetrarchies}. [L. tetrarchia,
Gr. ?: cf. F. t['e]trarchie.] (Rom. Antiq.)
The district under a Roman tetrarch; the office or
jurisdiction of a tetrarch; a tetrarchate.
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