A form of government where unlimited power is held by one single individual.

1650s, "independent power, self-sustained power," from French autocratie, from Greek autokrateia "ruling by oneself," noun of state from autokrates (see autocrat). Meaning "ab [..]

n. Absolute government.

Autocracy is a system of government where all political power and sovereignty is vested in a single ruler, usually a king, tsar or emperor.

A system of government where all political power over all the activities of the state is concentrated in the hands of one person without a voice of its subjects. A dictatorship.

Autocracia

Supreme political power is in the hands of one person whose decision are unregulated..

Rule or government concentrated in a single ruler or group of leaders who are willing to use force to maintain control.

Autocracy is a form of government where  the monarch is unlimited by law. The autocrat has uncontrolled and undisputed authority. Its power is maintained through military or police power. 

government by a single person or small group that has unlimited power or authority, or the power or authority of such a person or group

(n) a political system governed by a single individual(n) a political theory favoring unlimited authority by a single individual

A system of government in which supreme political power to direct all the activities of the state is concentrated in the hands of one person, whose decisions are subject to neither external legal rest [..]