psi

psi ¹  (s, ps, ps)

n.

The 23rd letter of the Greek alphabet. See Table at alphabet.

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[Middle English, from Late Greek, from Greek psei.]

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psi ²  (s)

n.

Parapsychological phenomena or abilities considered as a group.

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[Shortening and alteration of parapsychological.]

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psi ³

abbr.

pounds per square inch

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psi¹

abbreviation for

(Mathematics & Measurements / Units) pounds per square inch

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psi²

n

1. (Linguistics / Letters of the Alphabet (Foreign)) the 23rd letter of the Greek alphabet (Ψ, ψ), a composite consonant, transliterated as ps

2. (Psychology) (Spirituality, New Age, Astrology & Self-help / Alternative Belief Systems)

a.  paranormal or psychic phenomena collectively

b.  (as modifier) psi powers

Thesaurus

Noun	1.	psi - a unit of pressure pounds per square inch pressure unit - a unit measuring force per unit area
	2.	psi - the 23rd letter of the Greek alphabet Greek alphabet - the alphabet used by ancient Greeks alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"

Translations

psi¹ ABBR =pounds per square inch → kg/cm²

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psi² [saɪ] NPL (= psychic phenomena) → fenómenos mpl paranormales

psi

n no pl

(= letter) → Psi nt

(= psychic phenomena) → Psi nt