[From Greek mustikos: relating to the ancient mystery religions or their adherents; later, having to do with any sacred mystery.]
(epistemology) Any belief in the existence and validity of a human cognitive power above and beyond reason or perception - usually a kind of intuition or feeling that enables a person to obtain special insight into god, values, or the nature of the universe. The term "mysticism" usually carries religious connotations; similar views in philosophy proper are irrationalism in epistemology and intuitionism in ethics.