Did you know: What's the technical term for couples who call each other names like honey bunny?

psi

- 10 dictionary results

–noun,pluralpsis.

the 23rd letter of the Greek alphabet (Ψ, ψ).

the group of consonant sounds represented by this letter.

Use psi in a Sentence

See images of psi

Search psi on the Web

Origin:
1350–1400; ME < Gk pseî

–noun

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

Compare pseudoscience, parapsychology.

Origin:
1940–45; shortening of psychic or parapsychic

pounds per square inch.

Also, p.s.i.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
Cite This Source

Link To psi

World English Dictionary

psi¹

—*abbreviation for*
	pounds per square inch

psi² (psaɪ)

—n
1.	the 23rd letter of the Greek alphabet (Ψ, ψ), a composite consonant, transliterated as ps
2.	a. paranormal or psychic phenomena collectively
	b. (as modifier): psi powers

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source

Medical Dictionary

¹psi definition

Pronunciation: /ˈsī/
Function: adj
: relating to, concerned with, or being parapsychological psychic events or powers <psi phenomena>

²psi definition

Function: n
: psi events or phenomena

Merriam-Webster's Medical Dictionary, © 2007 Merriam-Webster, Inc.
Cite This Source

psi ¹ (sī, psī)
n.

Symbol ψ The 23rd letter of the Greek alphabet.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Computing Dictionary