triarchy

noun

tri·​ar·​chy ˈtrī-ˌär-kē 

plural triarchies

1

: government by three persons : triumvirate

2

: a country under three rulers

Examples of triarchy in a Sentence

Recent Examples on the Web

After years of taking on the food culture bro-triarchy, Toronto restaurant royalty Jen Agg is up against a new enemy. —Courtney Shea, refinery29.com, 1 Sep. 2021

Word History

Etymology

Greek triarchia, from tri- + -archia -archy

First Known Use

circa 1656, in the meaning defined at sense 1