superculture
/ˈsuːpəˌkʌltʃə/ /ˈsjuːpəˌkʌltʃə/noun
1Great or excessive intellectual or artistic refinement; high culture.
2Originally Cultural Anthropol. and Sociology. A set of cultural attitudes, beliefs, customs, etc., holding a dominant or very influential position in the world or in a large geographical area, and often regarded as overwhelming the culture of less powerful areas or groups.
Origin
Mid 19th century (in an earlier sense). From super- + culture.