Definition of hallucination
1a : perception of objects with no reality usually arising from disorder of the nervous system or in response to drugs (such as LSD) was having hallucinationsb : the object so perceived wasn't sure if the rain was real or a hallucination
2 : an unfounded or mistaken impression or notion : delusion
Examples of hallucination in a Sentence
He could not tell if what he was seeing was real or if it was a hallucination.
He has been having hallucinations due to the medication.
Recent Examples of hallucination from the Web
And something else about them all having absinthe hallucinations in a nightclub.
He's plagued by strange hallucinations of his former super heroic persona.
Not a hallucination, just a tightening in my chest, feeling I couldn’t breathe, like the world was going to end.
The antifungal medicine pumped through his IV caused kidney problems and strange hallucinations.
Kobe went crazy, and Lakers hallucinations went dormant.
Crazyhead follows a bowling alley employee named Amy who takes medications to stop her demon hallucinations.
Barre struggled for years with the hallucinations and dramatic mood swings of bipolar schizoaffective disorder, and had been committed four times for treatment at Tulsa mental health hospitals, according to his mother, Etta Barre.
That drug, Nuplacid, can be used for the treatment of hallucinations and delusions sometimes seen in people with Parkinson’s disease.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hallucination.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Synonym Discussion of hallucination
HALLUCINATION Defined for English Language Learners
Definition of hallucination for English Language Learners
: something (such as an image, a sound, or a smell) that seems real but does not really exist and that is usually caused by mental illness or the effect of a drug
HALLUCINATION Defined for Kids
Definition of hallucination for Students
: the seeing of objects or the experiencing of feelings that are not real but are usually the result of mental disorder or the effect of a drug
Medical Definition of hallucination
1: a perception of something (as a visual image or a sound) with no external cause usually arising from a disorder of the nervous system (as in delirium tremens or in functional psychosis without known neurological disease) or in response to drugs (as LSD)—compare delusion 2, illusion 2a
2: the object of a hallucinatory perception
Learn More about hallucination
See words that rhyme with hallucination Thesaurus: All synonyms and antonyms for hallucination Spanish Central: Translation of hallucination Nglish: Translation of hallucination for Spanish speakers Britannica English: Translation of hallucination for Arabic speakers Britannica.com: Encyclopedia article about hallucination
Seen and Heard
What made you want to look up hallucination? Please tell us where you read or heard it (including the quote, if possible).