Meaning & Definition of word "Psi"

Psi

/ˈsaɪ/

1. The twenty-third letter of the Greek alphabet (Ψ, ψ), used in various scientific contexts including physics, psychology, and sociology.
- Example: In quantum mechanics, the wave function is often represented using the Greek letter psi.
2. A unit of pressure equal to one pound per square inch, commonly used in various applications, including tire pressure and fluid dynamics.
- Example: The recommended tire pressure for the vehicle is 32 psi.
3. In parapsychology, 'psi' refers to purported psychic phenomena such as telepathy, clairvoyance, and psychokinesis.
- Example: The researcher conducted experiments to investigate the existence of psi effects among the participants.

From Greek 'psi', the name of the 23rd letter of the Greek alphabet.

psi phenomenon:

Refers to a range of psychic experiences and effects.

psi research:

The scientific study of psychic phenomena.

psi abilities:

Skills believed to involve psychic powers.

psychology:

The scientific study of behavior and mental processes.

paranormal:

Events or phenomena that are beyond the scope of normal scientific understanding.

telepathy:

The purported transmission of information from one person to another without using any known human senses.

Meaning: Unexplained or supernatural occurrences.

Example Sentence: That ghost sighting was total psi.

Meaning: A person believed to have psychic abilities.

Example Sentence: She's a real psi; she can predict the future!