su‧per‧struc‧ture /ˈsuːpəˌstrʌktʃə $ -pərˌstrʌktʃər/ noun [singular, uncountable]

1. a structure that is built on top of the main part of something such as a ship or building

2. formal a political or social system that has developed from a simpler system:
the whole superstructure of capitalism

[TahlilGaran] Dictionary of Contemporary English ▲