Source : Webster's Revised Unabridged Dictionary (1913)

Metempsychosis \Me*temp`sy*cho"sis\, n. [NL., fr. Gr. ?; ?
   beyond, over + ? to animate; ? in + ? soul. See
   {Psychology}.]
   The passage of the soul, as an immortal essence, at the death
   of the animal body it had inhabited, into another living
   body, whether of a brute or a human being; transmigration of
   souls. --Sir T. Browne.

Source : WordNet®

metempsychosis
     n : after death the soul begins a new cycle of existence in
         another human body [syn: {rebirth}]
     [also: {metempsychoses} (pl)]