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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.
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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)

Synonyms for hallucination

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for hallucinative

hallucination

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

Word Origin and History for hallucinative

hallucination

n.

in the pathological/psychological sense of "seeing or hearing something which is not there," 1640s, from Latin hallucinationem (nominative hallucinatio), from past participle stem of hallucinari (see hallucinate). Hallucination is distinct from illusion in not necessarily involving a false belief. Related: Hallucinations.

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Online Etymology Dictionary, © 2010 Douglas Harper

hallucinative in Medicine

hallucination

(hə-lōō′sə-nāshən)
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.
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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.

hallucinative in Culture

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.)

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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.