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Adorcism

In the sociology of religion, Luc de Heusch coined the term adorcism for practices to placate or accommodate spiritual entities in a possessed person or place. Unlike exorcism, the relationship with the entities is potentially positive. This is sometimes used as initiation into a spirit cult.

Jean-Michel Oughourlian defines adorcism as "voluntary, desired, and curative possessions".

Wiktionary

adorcism

n. voluntary, desired or curative possession by a spirit