\Psy"chic\, Psychical \Psy"chic*al\, a. [L. psychicus,
Gr. ?, fr. psychh` the soul, mind; cf. ? to blow: cf. F.
psychique.]
1. Of or pertaining to the human soul, or to the living
   principle in man.
Note: This term was formerly used to express the same idea as
      psychological. Recent metaphysicians, however, have
      employed it to mark the difference between psychh` the
      living principle in man, and pney^ma the rational or
      spiritual part of his nature. In this use, the word
      describes the human soul in its relation to sense,
      appetite, and the outer visible world, as distinguished
      from spiritual or rational faculties, which have to do
      with the supersensible world. --Heyse.
2. Of or pertaining to the mind, or its functions and
   diseases; mental; -- contrasted with physical.
{Psychical blindness}, {Psychical deafness} (Med.), forms of
   nervous disease in which, while the senses of sight and
   hearing remain unimpaired, the mind fails to appreciate
   the significance of the sounds heard or the images seen.
{Psychical contagion}, the transference of disease,
   especially of a functional nervous disease, by mere force
   of example.
{Psychical medicine}, that department of medicine which
   treats of mental diseases.