superstructure

Concise Oxford English Dictionary © 2008 Oxford University Press:
superstructure/ˈsuːpəstrʌktʃə(r)/

▶noun

• 1 a structure built on top of something else.

  ■ the part of a building above its foundations.

  ■ the parts of a ship, other than masts and rigging, built above its hull and main deck.

• 2 a concept or idea based on others.

• 3 (in Marxist theory) the institutions and culture considered to result from or reflect the economic system underlying a society.

– derivatives
superstructural adjective.