diarchy

1 of 2

noun (1)

di·​ar·​chy

less common spelling of dyarchy

: a government in which power is vested in two rulers or authorities

dyarchy

2 of 2

noun (2)

dy·​ar·​chy ˈdī-ˌär-kē 

variants or less commonly diarchy

plural dyarchies

: a government in which power is vested in two rulers or authorities

Word History

First Known Use

Noun (2)

1640, in the meaning defined above