Necromancy () or
nigromancy is a form of
magic involving communication with the
deceased – either by
summoning their
spirit as an
apparition or raising them bodily – for the purpose of
divination, imparting the means to foretell future events or discover hidden knowledge, or to use the deceased as a weapon, as the term may sometimes be used in a more general sense to refer to
black magic or
witchcraft.