1

psi

noun \ ˈsī , ˈpsī \

Definition of psi

: 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

noun \ ˈsī \

Definition of psi

: parapsychological psychic phenomena or powers

Origin and Etymology of psi

probably by shortening & alteration from psychic


3

psi

abbreviation

Definition of psi

pounds per square inch

Medical Dictionary

1

psi

adjective \ ˈsī \

medical Definition of psi

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

2

psi

noun

medical Definition of psi

: psi events or phenomena

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