1

psi

play
noun \ˈsī, ˈpsī\

Definition of psi

  1. :  the 23rd letter of the Greek alphabet — see alphabet table

Origin and Etymology of psi

Middle English, from Medieval Latin, from Late Greek, from Greek psei


2

psi

play
noun \ˈsī\

Definition of psi

  1. :  parapsychological psychic phenomena or powers

Origin and Etymology of psi

probably by shortening & alteration from psychic


3

psi

abbreviation

Definition of psi

  1. pounds per square inch


Medical Dictionary

1

psi

play
adjective \ˈsī\

Medical Definition of psi

  1. :  relating to, concerned with, or being parapsychological psychic events or powers psi phenomena


2

psi

noun

Medical Definition of psi

  1. :  psi events or phenomena

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