1.Definition: a mistaken or unfounded opinion or idea

"He has delusions of competence", "His dreams of vast wealth are a hallucination"

Related Noun(s):delusion

Category: General

2.Definition: an object perceived during a hallucinatory episode

"He refused to believe that the angel was a hallucination"

Category: General

3.Definition: illusory perception; a common symptom of severe mental disorder

Category: General