Necromancy n. : The art of revealing future events by means of a pretended communication with the dead; the black art; hence, magic in general; conjuration; enchantment. See Black art.

Example:


Taxonomy
necromancers, Greek and Roman Necromancy, demons, Kieckhefer, spirits, spells, the dead, rituals, practitioners, magic, death, shades, Christian, states, conjuration, manipulation, An Encyclopedia of Occultism, Encyclopedia.

Defination from the web:
Necromancy. ... The word necromancy derives from the Greek νεκρός (nekrós), "dead", and μαντεία (manteía), "prophecy". However, since the Renaissance, necromancy (or nigromancy) has come to be associated more broadly with black magic and ...