Sorcery is the summoning (see Conjuration) of supernatural powers or spirits through incantations, evocations. Sorcery usually concerns black magic and is performed by s sorcerer for personal gain or for the personal gain of the one paying for his services. This is considered low magic by most magicians. A.G.H.
Drury, Nevil. The Watkins Dictionary of Magic. London. Watkins Publishing. 2005. p. 266