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.