Thaumaturgy (Greek, thaumaturgeia, from thaumata, “wonders” and ergeia, “work”) is a branch of magic practiced to cause change with the sensible universe. This type of magical practice mainly concerns making a physical change in the universe without invoking divine help of the gods as opposed to theurgy. Some Neo-pagan traditions employ thaumaturgic work. A.G.H.
Greer, John Michael. The New Encyclopedia of the Occult. St. Paul, MN, Llewellyn Worldwide. p. 478