<p><strong>Noun</strong></p><ul><li>the belief or doctrine that the spirits of the dead, surviving after the mortal life, can and do communicate with the living, especially through a person (a medium) particularly susceptible to their influence.</li><li>the practices or phenomena associated with this belief.</li><li>the belief that all reality is spiritual.</li><li>Metaphysics. any of various doctrines maintaining that the ultimate reality is spirit or mind.</li><li>spiritual quality or tendency.</li><li>insistence on the spiritual side of things, as in philosophy or religion.</li></ul>