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psycho

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psy⋅cho

  [sahy-koh] noun, plural -chos, adjective Slang.
Use psycho in a Sentence
–noun
1. a psychopathic or neurotic person.
–adjective
2. psychopathic; psychoneurotic.
Origin:
1935–40; shortened form
"Psycho" (1960) DVD
Hitchcock thriller. Anthony Perkins 1000s of titles not found elsewhere
MoviesUnlimited.com

psycho-

 
a combining form representing psyche (psychological) and psychological (psychoanalysis) in compound words.
Also, especially before a vowel, psych-.

Origin:
< Gk, comb. form of psȳch breath, spirit, soul, mind; akin to psȳ́chein to blow (see psykter )
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To psycho
psy·cho   (sī'kō)   
n.   pl. psy·chos
A psychopath.
adj.  Crazy; insane.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Slang Dictionary
psycho

  1. n.
    a psychopathic person; a crazy person. : Pat is turning into a real psycho.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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Word Origin & History

psycho 
1927 (adj.), shortening of psychological; 1936 as shortening of psychopathic (adj.). The noun , short for psychopath, is attested from 1942.

psycho- 
comb. form meaning "mind, mental," from Gk. psykho-, combining form of psykhe (see psyche).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: psy·cho
Pronunciation: 'sI-(")kO
Function: noun
Inflected Form: plural psychos
: a deranged or psychopathic individual—not used technically —psycho adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

psycho psy·cho (sī'kō)
n.
A psychopath. adj.
Crazy; insane.

psycho- or psych-
pref.

  1. Mind; mental: psychogenic.

  2. Mental activities or processes: psychomotor.

  3. Psychology; psychological: psychosocial.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Abbreviations & Acronyms
psycho
psychopath
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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