(Greek: by the side of, beside, past, beyond; contrary, wrong, irregular, abnormal)
2. Any parasitic vegetable organism or species.
2. A false parasite; which may be either a commensal or a temporary parasite (the latter being an organism accidentally ingested and surviving briefly in the intestine).
The extrasensory mental processes involved in the alleged ability to send or to receive telepathic messages.2. In parapsychology, this term refers to whatever it is that enables a person to perceive extrasensorially.
This word was added so you will know that there is no known connection with this psi and the Greek psi (Ψ, ψ). This psi is said to be a shortening and alteration of parapsychological or a shortening of psychic or parapsychic.
2. A strange organism not usually parasitic on the host but that becomes so because of a weakened condition of the host.