- 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
SynonymsSee more synonyms for on Thesaurus.com
Examples from the Web for hallucination
How can we taxonomize their experience, and differentiate it from hallucination, or psychotic break?Eben Alexander Has a GPS for Heaven
October 8, 2014
The hallucination is visually incoherent, either a rough approximation of text or a random assemblage of letters.Knocking on Heaven's Door: True Stories of Unexplained, Uncanny Experiences at the Hour of Death
August 11, 2014
It's confusing at times; what's real and what's a hallucination isn't always clear.Lady Gaga, Avril Lavigne & More Best Music Videos of the Week (VIDEO)
August 25, 2013
The whole thing is played completely straight, with no sign that it is a dream sequence, hallucination, or break from reality.12 Most Absurd ‘30 Rock’ Moments (VIDEO)
January 31, 2013
She even befriended a figure that may have been a hallucination or possibly an angel sent from heaven.Gina Gershon on ‘Killer Joe,’ Tom Cruise, ‘Showgirls,’ ‘Bound’
July 18, 2012
Absolute equality is an hallucination of the hunger-fever, nothing more.Freeland
All at once, however, Claude fancied he was the victim of some hallucination.His Masterpiece
He could not believe that Spurling had ever come; it was all an hallucination.Murder Point
The simple matter is, dear madam, you have been under a hallucination all along.
When he saw her approaching he always had a moment of hallucination.Within the Tides
- the alleged perception of an object when no object is present, occurring under hypnosis, in some mental disorders, etc
Word Origin and History for hallucination
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.
- 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.
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.)