Initiation to Civili ...

noun

The male sovereign or supreme ruler of an empire: the emperors of Rome.

noun

1. a group of nations or peoples ruled over by an emperor, empress, or other powerful sovereign or government: usually a territory of greater extent than a kingdom, as the former British Empire, French Empire, Russian Empire, Byzantine Empire, or Roman Empire.
2. a government under an emperor or empress.
3. ( often initial capital letter ) the historical period during which a nation is under such a government: a history of the second French empire.