post ‧ mod ‧ ern ‧ is ‧ m /ˌpəʊstˈmɒd ə n-ɪz ə m $ ˌpoʊstˈmɑːdərn-/ BrE AmE noun [uncountable]
a style of building, painting, writing etc, developed in the late 20th century, that uses a mixture of old and new styles as a reaction against ↑ modernism
—postmodernist adjective :
postmodernist fiction
—postmodernist noun [countable]