plu ‧ toc ‧ ra ‧ cy /pluːˈtɒkrəsi $ -ˈtɑːk-/ BrE AmE noun ( plural plutocracies ) [countable]
[ Date: 1600-1700 ; Language: Greek ; Origin: ploutokratia , from ploutos 'wealth' + -kratia '-cracy' ]
a ruling class or government that consists of rich people, or a country that is governed by rich people