Definitions
1.nounA person who possesses, or appears to possess, extra-sensory abilities such as precognition, clairvoyance and telepathy, or who appears to be susceptible to paranormal or supernatural influence.
2.nounA person who supposedly contacts the dead; a medium.
3.noun(gnosticism) In gnostic theologian Valentinus' triadic grouping of man the second type; a person focused on intellectual reality (the other two being hylic and pneumatic).
4.nounPsychology