hallucination

[huh-loo-suh-ney-shuhn]
noun
1.
a sensory experience of something that does not exist outside the mind, caused by various physical and mental disorders, or by reaction to certain toxic substances, and usually manifested as visual or auditory images.
2.
the sensation caused by a hallucinatory condition or the object or scene visualized.
3.
a false notion, belief, or impression; illusion; delusion.

Origin:
1640–50; < Latin hallūcinātiōn- (stem of (h)allūcinātiō) a wandering of the mind. See hallucinate, -ion

hallucinational, hallucinative [huh-loo-suh-ney-tiv, -nuh-tiv] , adjective
nonhallucination, noun

allusion, delusion, elusion, hallucination, illusion (see synonym study at illusion).


1. phantasm, aberration. See illusion.
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World English Dictionary
hallucination (həˌluːsɪˈneɪʃən)
 
n
the alleged perception of an object when no object is present, occurring under hypnosis, in some mental disorders, etc
 
halluci'national
 
adj
 
hal'lucinative
 
adj
 
hal'lucinatory
 
adj

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American Heritage
Medical Dictionary

hallucination hal·lu·ci·na·tion (hə-lōō'sə-nā'shən)
n.

  1. False or distorted perception of objects or events with a compelling sense of their reality, usually resulting from a mental disorder or drug.

  2. The objects or events so perceived.


hal·lu'ci·nate' v.
hal·lu'ci·na'tion·al or hal·lu'ci·na'tive adj.
The American Heritage® Stedman's Medical Dictionary
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American Heritage
Cultural Dictionary

hallucination definition


A false perception that appears to be real, as when, for example, a man dying of thirst in a desert thinks that he sees a lake. (See also delusion.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Is this the dream, or is this the hallucination that one is doing well.
The uncertainty about what is hallucination and what is real exemplifies the
  world of the psychotic.
His symptoms were chiefly auditory hallucination and paranoid ideation.
The hallucination that he could jump back to camp is a typical manifestation of
  that ailment.
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