spiritists

/ˈspɪrɪtɪsts/
noun
  1. People who believe that the spirits of the dead can communicate with the living, often through a medium.
    • In the 19th century, spiritists became popular in both Europe and America.
    • The spiritists held a séance to contact a famous historical figure.
    • Many spiritists gather annually to share their experiences with the afterlife.