au·to·crat 
(ôtə-krăt′)
(ôtə-krăt′)n.
1. A ruler having unlimited power; a despot.
2. A person with unlimited power or authority: a corporate autocrat.
[French autocrate, from Greek autokratēs, ruling by oneself : auto-, auto- + -kratēs, -crat.]
- radiant flux
- radiantly
- radiate
- radiation
- radiational
- radiation oncology
- radiation pressure
- radiation sickness
- radiation therapy
- radiative
- radiative zone
- radiator
- radical
- radical expression
- radicalism
- radicalization
- radicalize
- radically
- radical mastectomy
- radicalness
- radical sign
- radicand
- radicchio
- radices
- radicle