Necromancer: (Middle English via Old French nigromancie from medieval Latin nigromantia, changed from Late Latin 'necromantia', from Greek 'nekromanteia' (as necro-, -mancy), meaning 'black' and 'divination by'): a sorcerer: a practitioner of witchcraft involving the reanimation of the dead: a magician who can predict the future by communication with the dead.