[ doo-ahr-kee, dyoo- ]
/ ˈdu ɑr ki, ˈdyu- /
noun, plural du·ar·chies.
a government or form of government in which power is vested equally in two rulers.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for duarchy
In 1868, after revolution and restoration, the old order changed, and duarchy and feudalism passed away.The Religions of Japan|William Elliot Griffis