seance

noun

1. a meeting in which a spiritualist attempts to communicate with the spirits of the dead.
2. a session or sitting, as of a class or organization.

noun

1. a meeting at which spiritualists attempt to receive messages from the spirits of the dead
2. a meeting of a society

n.1789, “sitting, session,” as of a learned society, from French séance “a sitting,” from seoir “to sit,” from Latin sedere (see sedentary). Meaning “spiritualistic session” first recorded 1845.