necromancy
noun
[ ˈnɛkrə(ʊ)mansi ]
• the supposed practice of communicating with the dead, especially in order to predict the future.
• "alchemy, necromancy, and other magic practices"
Origin:
Middle English nigromancie, via Old French from medieval Latin nigromantia, changed (by association with Latin niger, nigr- ‘black’) from late Latin necromantia, from Greek (see necro-, -mancy). The spelling was changed in the 16th century to conform with the late Latin form.