noun. a form of government having two joint rulers.
- political system
- form of government
- -archy (English)
- -archia (Latin)
- di- (English)
- δία (Ancient Greek (to 1453))
Example sentences of the word diarchy
1. Noun, singular or mass
The English Bill of Rights (1689) was created after King James II refused to recognize the rights of the English people and was driven out of the country, replaced by the diarchy of William and Mary.