psi: Meaning and Definition of

psi

Pronunciation: (sī, psī), [key]

— pl. psis.

the 23rd letter of the Greek alphabet (&PSgr;, &psgr;).
the group of consonant sounds represented by this letter.

psi

Pronunciation: (sī), [key]

— n.

any purportedly psychic phenomenon, as psychokinesis, telepathy, clairvoyance, or the like. Cf.

psi

Pronunciation: [key]

pounds per square inch.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

See also:

psi (Thesaurus)

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