hallucination
A hallucination is when someone sees or hears things that aren't really there. It's like their imagination has run away with them.
You might hear about someone having a hallucination if they've been injured badly, or if they're taking certain medicines that change how their brain works. Hallucinations can be scary and confusing for the person experiencing them. They might see animals running around in their room when there's no one else there, or hear voices talking to them when nobody is speaking. In some cases, hallucinations can be a symptom of a medical condition like epilepsy or a mental health issue.
How common is "hallucination"?
It has a balanced usage among all categories: speech, fiction, newspapers and academic texts.
noun
A sensory perception of something that does not exist, often arising from disorder of the nervous system, as in delirium tremens; a delusion.
Real examples of "hallucination" in context
