the practice of claiming to communicate by magic with the dead in order to learn about the future 通灵术；巫术 the use of magic powers, especially evil ones 妖术；巫术
Word OriginMiddle English nigromancie, via Old French from medieval Latin nigromantia, changed (by association with Latin niger, nigr- ‘black’) from late Latin necromantia, from Greek (from necro- nekros ‘corpse’ and -mancy manteia ‘divination’). The spelling was changed in the 16th cent. to conform with the late Latin form.