Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

hallucination

noun [C or U]
 
 
/həˌluː.sɪˈneɪ.ʃən/

Definition

an experience in which you see, hear, feel, or smell something that does not exist, usually because you are ill or have taken a drug: A high temperature can cause hallucinations. auditory/olfactory hallucinationsDreaming
(Definition of hallucination noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“hallucination” in other dictionaries

Word of the Day

everything under the sun

everything that exists or is possible

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More