hallucinationhal‧lu‧ci‧na‧tion /həˌluːsəˈneɪʃən/ noun 
Examples
The patients suffered hallucinations caused by the drug.
ExamplesEXAMPLES FROM OTHER DICTIONARIES
Thesaurus- Doctors believe the medication was the cause of her hallucinations.
- I knew that what I had seen was a hallucination, but it was so real and frightening.
- I suffered horrendous hallucinations and flashbacks, and quit using LSD.
- In tests, the drug caused patients to have hallucinations.
- Jamie lost two and a half stone in the next fortnight, couldn't eat and had hallucinations.
- As she shoveled, the cries grew too loud to be passed off as wishful hallucinations.
- But the heat was more seen than felt, more hallucination than discomfort.
- Causes stupor, hallucinations, vomiting.
- Close supervision of patients is needed when they have delusions or hallucinations concerning the baby.
- Persinger has suggested that these reports might be hallucinations instilled into the witnesses by the effect of ionising radiation in close proximity.
- Sometimes the hallucinations associated with small seizures in the temporal lobe have characteristics suggestive of schizophrenic thought, especially paranoia.
- Stanley said he had flashbacks and hallucinations for several years after he left Edgewood and returned to duty at Fort Knox.
- This would be the case if indeed the events were involuntary hallucinations.
Longman Language Activatorsomething that you imagine► imaginary
[countable, uncountable] something which you imagine you can see or hear, but which is not really there, or the experience of this: not real, but existing only as a picture or idea in your mind: · When Linda was a child she had an imaginary friend called Booboo.· He pointed an imaginary gun at me and pretended to shoot.· Frankie was the kind of guy who lived in an imaginary world all of his own.
► fantasy an exciting or enjoyable experience that you imagine happening to you, but which will probably never happen: · Everyone's fantasy is that one day they will win the National Lottery.live in a fantasy world (=to always be having fantasies): · My son seems to live in a fantasy world sometimes.
► daydream pleasant thoughts you have about something you would like to do, that make you forget where you are and what you are doing: · I began to have daydreams about us being married.· She was sitting at the back of the class, lost in a daydream.
► hallucination something you see that does not really exist, especially something that you see because you are ill or have taken drugs: · I knew that what I had seen was a hallucination, but it was so real and frightening.have hallucinations: · Jamie lost two and a half stone in the next fortnight, couldn't eat and had hallucinations.
► vision an image, especially a religious image, that you can see but which other people cannot: · Bernadette had a vision in which the Virgin Mary appeared before her.
something you think you see that is not really there► hallucination an experience of seeing something which is not really there, for example because you have been taking drugs or because you are ill: suffer/have hallucinations: · I suffered horrendous hallucinations and flashbacks, and quit using LSD.· In tests, the drug caused patients to have hallucinations.
► illusion something that you imagine you can see, that is either not there at all, or is actually something else: · The road appears to get narrower as you look into the distance, but it's just an illusion.give/create an illusion of something: · It's a small room, but the mirrors create an illusion of space.· She isn't particularly tall, but her upright posture gives an illusion of height.
► mirage something, especially an area of water in a desert, that you think you can see in the distance but which is not really there, caused by hot air conditions: · She thought at first it must be the edge of the sea, then realised it was a mirage.· an eerie no-man's land where travellers see mirages
► vision something that you imagine you can see, especially as part of a strong religious experience: · In her vision, Joan of Arc saw an angel telling her to go and fight for France.vision of: · Three days before she died, Rita was blessed with a vision of Our Lord.have visions : · Many people claim to have had visions while praying at Lourdes.
► be seeing things spoken to imagine that you are seeing something that is not there - use this especially to say that you are so surprised at something that you see that you almost cannot believe it: · I thought I saw Patty arrive. I must be seeing things today.
The patients suffered hallucinations caused by the drug.