oligarch
Pronunciation:
/ˈoʊlɪˌɡɑɹk/noun
Definitions
A member of an oligarchy; someone who is part of a small group that runs a country.
(especially Russia, USA, Europe, or China) A very rich person, particularly with political power; a plutocrat.
Synonyms:plutocrattycoonocrat(cosmogony) A protoplanet formed during oligarchic accretion.