Source : Webster's Revised Unabridged Dictionary (1913)

Montanist \Mon"ta*nist\, n. (Eccl. Hist.)
   A follower of Mintanus, a Phrygian enthusiast of the second
   century, who claimed that the Holy Spirit, the Paraclete,
   dwelt in him, and employed him as an instrument for purifying
   and guiding men in the Christian life. -- {Mon`ta*nis"tic},
   {Mon`ta*nis"tic*al}, a.