Source : Webster's Revised Unabridged Dictionary (1913)

Spiritualist \Spir"it*u*al*ist\, n.
   1. One who professes a regard for spiritual things only; one
      whose employment is of a spiritual character; an
      ecclesiastic.

   2. One who maintains the doctrine of spiritualism.

   3. One who believes in direct intercourse with departed
      spirits, through the agency of persons commonly called
      mediums, by means of physical phenomena; one who attempts
      to maintain such intercourse; a spiritist.

Spiritualist \Spir"it*u*al*ist\, a.
   Spiritualistic. --Taylor.

Source : WordNet®

spiritualist
     adj : of or relating to or connected with spiritualism [syn: {spiritualistic}]

spiritualist
     n : someone who serves as an intermediary between the living and
         the dead; "he consulted several mediums" [syn: {medium}]