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1. The male ruler of an empire.
a. The emperor butterfly.
b. The emperor moth.
c. The emperor penguin.

[Middle English emperour, from Old French empereor, from Latin imperātor, from imperāre, to command : in-, in; see en-1 + parāre, to prepare; see perə- in Indo-European roots.]

em′per·or·ship′ n.
References in periodicals archive ?
In fact, discourse of emperorship of national state and establish powerful state which is regarded as important factor has been encountered to main factor for nationalists so that the coup is as immediate solution for it.
There is no reason for Iran to be after growing an empire, the Islamic Revolution's thought is against emperorship and its only concern is the honor of the Muslims and their unity to attain this honor; we are not after emperorship and puppets and don't want to be as such," he said, responding to Kissinger's comments.
In 1914, northern Iran was part of the Russian emperorship, whose consulates ruled Iran instead of the local government.
The term "Heaven's blessings" refers to blessings and emoluments bestowed by Heaven, but it was also a metaphor for the emperorship.