/ ˈsuːpəstrʌktʃə(r); ˈsjuː-; NAmE ˈsuːpərs-/ noun
1.
a structure that is built on top of sth, for example the upper parts of a ship or the part of a building above the ground
—compare substructure
2.
( formal ) the systems and beliefs in a society that have developed from more simple ones