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dyarchy

noun

dy·​ar·​chy ˈdī-ˌär-kē How to pronounce dyarchy (audio)
variants or less commonly diarchy
plural dyarchies
Synonyms of dyarchynext
: a government in which power is vested in two rulers or authorities

Word History

First Known Use

1640, in the meaning defined above

Time Traveler
The first known use of dyarchy was in 1640

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Cite this Entry

“Dyarchy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dyarchy. Accessed 7 Dec. 2025.

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