Metaphysics

Metaphysics is a word that derives from the Greek words μετά (metá, "beyond", "upon" or "after") and φυσικά (physiká, "physics"). The term is used to name the branch of philosophy concerned with explaining the fundamental nature of being and the world, the first causes of things, and those things that do not change.

In Theosophical literature the term is also frequently used to refer to realities that are beyond the physical plane, especially the noumenal planes.