hallucination
(noun)
noun
1. illusory perception; a common symptom of severe mental disorder
Definition categories: state, delusion
2. a mistaken or unfounded opinion or idea
- his dreams of vast wealth are a hallucination
Similar word(s): delusion
Definition categories: thought, misconception
3. an object perceived during a hallucinatory episode
- he refused to believe that the angel was a hallucination