-ocracy /ɒkrəsi $ ɑːk-/ AmE ( also -cracy ) suffix [in nouns]
[ Language: Old French ; Origin: -cracie , from Late Latin -cratia , from Greek , from kratos 'strength, power' ]
government by a particular sort of people or according to a particular principle:
democracy (=government by the people)
meritocracy (=government by people with the most ability)