[ad. Gr. τετραδαρχία, f. τετράς TETRAD + -αρχία rule.] = TETRARCHY.
1839. Thirlwall, Greece, VI. xlv. 14. Philip revived the distinction of the tetradarchies.
1842. Smith’s Dict. Grk. & Rom. Antiq., s.v. Tagus, The four divisions of the country, tetrarchies or tetradarchies, which he re-established.
