Encyclopediaclairvoyance
clairvoyance (klâr"voi'uns) [key], alleged power to perceive, as though visually, objects or persons not discernible through the ordinary sense channels. Clairvoyance may occur in a supposedly normal state (second sight) or more generally in a trance induced by various agencies, such as drugs, fasting, illness, or crystal gazing. See spiritism and parapsychology.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.
More on clairvoyance from Infoplease:
