emperor definition by Webster's New World
- the supreme ruler of an empire
- any of various butterflies (family Nymphalidae) and moths (family Saturniidae)
Origin: Middle English emperour ; from Old French empereor, ruler (of the Holy Roman Empire) ; from Classical Latin imperator, commander in chief ; from past participle of imperare, to command ; from in-, in plush parare, to set in order, prepare
- emperorship noun
emperor definition by American Heritage Dictionary
- The male ruler of an empire.
- a. The emperor butterfly.b. The emperor moth.
Origin: Middle English emperour, from Old French empereor, from Latin imperātor, from imperāre, to command : in-, in; see en-1 + parāre, to prepare; see perə-1 in Indo-European roots.
- emˈper·or·shipˌ noun