plutocracy
From Longman Dictionary of Contemporary EnglishRelated topics: Governmentplutocracyplu‧toc‧ra‧cy /pluːˈtɒkrəsi $ -ˈtɑːk-/ noun (plural plutocracies) [countable] PGRICHa ruling class or government that consists of rich people, or a country that is governed by rich peopleExamples from the Corpusplutocracy• Some were outright extensions of traditional hierarchies, while others were predominantly recruited from the new plutocracy and professions.Origin plutocracy (1600-1700) Greek ploutokratia, from ploutos “wealth” + -kratia “-cracy”