noun. The act of de-materializing, or divesting of material qualities.

noun. In mod. spiritualism, the alleged act or process of dissolving and vanishing after materialization (which see).

noun. Also spelled dematerialisation.

noun. the act or process of dematerializing

"What has been happening is a technological and social response that has sometimes been called dematerialization, or ephemeralization – a process in which information and other immaterial inputs are being substituted for many material inputs."