sub‧sid‧i‧ar‧i‧ty /səbˌsɪdiˈærəti, səbˌsɪdiˈærɪti/ noun [uncountable]
a word meaning a political policy(1) in which power to make decisions is given to a smaller group – used especially about the European Union giving power to its member countries

[TahlilGaran] Dictionary of Contemporary English ▲