Psi – The 23rd letter of the Greek alphabet and a term used in Parapsychology to refer to psychic functioning. Pronounced – sigh! There are two major forms of psi – informational or Receptive Psi and Expressive Psi. The term psychic is used to describe someone who is a psychic, but it also indicates a process whereby information is communicated beyond time & space and between us and everything around us. The term psi is generally a more appropriate term for this process, since, for example, energy healers and workers utilize the expressive psi process but do not consider themselves ‘a psychic.’