noun, plural di·ar·chies.
Related formsdi·ar·chi·al, di·ar·chic, adjective
Examples from the Web for diarchy
Diarchy, dī′ar-ki, n. a form of government in which two persons are jointly vested with supreme power—less correctly Dī′narchy.
The diarchy, however, as might have been expected, was found not to work very successfully in practice.Pyrrhus|Jacob Abbott
This diarchy was to hold for both the central and provincial governments.The New World of Islam|Lothrop Stoddard