hallucination

[ huh-loo-suh-ney-shuhn ]
/ həˌlu səˈneɪ ʃən /

noun

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.
the sensation caused by a hallucinatory condition or the object or scene visualized.
a false notion, belief, or impression; illusion; delusion.

Origin of hallucination

1640–50; < Latin hallūcinātiōn- (stem of (h)allūcinātiō) a wandering of the mind. See hallucinate, -ion
Related formshal·lu·ci·na·tion·al, hal·lu·ci·na·tive [huh-loo-suh-ney-tiv, -nuh-tiv] /həˈlu səˌneɪ tɪv, -nə tɪv/, adjectivenon·hal·lu·ci·na·tion, noun
Can be confusedallusion delusion elusion hallucination illusion (see synonym study at illusion)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for hallucination

hallucination

/ (həˌluːsɪˈneɪʃən) /

noun

the alleged perception of an object when no object is present, occurring under hypnosis, in some mental disorders, etc

Derived Formshallucinational, hallucinative or hallucinatory, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for hallucination

hallucination

[ hə-lōō′sə-nāshən ]

n.

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

Related formshal•luci•nate′ v.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Culture definitions for hallucination

hallucination

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 New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.