tetrarchy
/ˈtɛtrɑːrki/
noun
- A form of government in which power is shared by four rulers, especially in ancient Rome.
- Students in history class learned how the tetrarchy divided the empire into eastern and western halves.
- The tetrarchy lasted for about twenty years before civil war broke out.
- Diocletian established the tetrarchy to bring stability to the Roman Empire.
Synonyms