Webster's Revised Unabridged Dictionary · 1913

Necromancy

Necromancy , noun

[Old English nigromaunce, nigromancie, Old French nigromance, French nécromance, nécromancie, from Latin necromantia, Greek {not transcribed}; nekro`s a dead body (akin to Latin necare to kill, Sanskrit nac to perish, vanish) + {not transcribed} divination, from {not transcribed} diviner, seer, akin to English mania. See Mania, and compare Internecine, Noxious. The old spelling is due to confusion with Latin niger black. Hence the name black art.]

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.
This palace standeth in the air, By necromancy placèd there. — Drayton