Necromancy (noun)

The supposed practice of communicating with the dead, especially in order to predict the future or discover hidden knowledge.

Origin:

From the greek word "nekromanteia" meaning "divination by means of the dead".

Examples:

1. The study of necromancy has been banned in many countries.
2. He was accused of practicing necromancy and was burned at the stake.
3. The sorcerer was said to have learned necromancy from the spirits of the dead.
4. Necromancy is considered a form of black magic.
5. The necromancy ritual was said to have been performed at midnight on a full moon.