Au·toc·ra·cy n.; pl. Autocracies.
 1. Independent or self-derived power; absolute or controlling authority; supremacy.
    The divine will moves, not by the external impulse or inclination of objects, but determines itself by an absolute autocracy.   --South.
 2. Supreme, uncontrolled, unlimited authority, or right of governing in a single person, as of an autocrat.
 3. Political independence or absolute sovereignty (of a state); autonomy.
 4. Med. The action of the vital principle, or of the instinctive powers, toward the preservation of the individual; also, the vital principle.  [In this sense, written also autocrasy.]

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