spiritualist

Short definition from Wiktionary

Noun

1. 1
   One who professes a regard for spiritual things only; one whose employment is of a spiritual character; an ecclesiastic.
2. 2
   One who maintains the philosophic doctrine of spiritualism.
3. 3
   One who practises spiritism (a.k.a. spiritualism); a believer in the possibility of communication with the dead; one who attempts to communicate with the dead.
4. 4
   An adherent of a dissenting reforming tendency during the early modern period, stressing communion with the Holy Spirit and moral improvement through sanctification while rejecting the outwardly church, without necessarily separating from the Roman Catholic Church.

Adjective

1. 1
   Pertaining to spiritualism; spiritualistic.
2. 2
   Pertaining to the Spiritualists.