Dictionary definition of postmoddernism

from wikipedia

Postmodernism literally means 'after modernism'. While "modern" itself refers to something "related to the present", the movements modernism and postmodernism are understood as cultural projects or as a set of perspectives. It is used in critical theory to refer to a point of departure for works of literature, drama, architecture, cinema, journalism and design, as well as in marketing and business and in the interpretation of history, law, culture and religion in the late 20th and early 21st centuries.
In one of the seminal works on the topic, philosopher and literary critic Fredric Jameson describes postmodernism as the "dominant cultural logic of late capitalism", that is, as the cultural practices that are organically bound to postmodernism's historical economic correspondent ("late capitalism", a period sometimes called financial capitalism, postindustrialism, consumer capitalism, globalization). In this understanding, the period of postmodernism's dominance begins early in the Cold War and continues through to the present.[1]
Postmodernism can also be understood as a reaction to modernism. Following the devastation of fascism, World War II, and the Shoah, many intellectuals and artists in Europe became distrustful of the whole modernist political, economic, and aesthetic project.[2] Whereas modernism was often associated with identity, unity, authority, and certainty, postmodernism is often associated with difference, separation, textuality, skepticism.