|1.||[ noun ] (psychology,psychiatry) an erroneous belief that is held in the face of evidence to the contrary|
|Related terms:||psychological_state hallucination nihilism delusions_of_persecution somatic_delusion zoanthropy delusions_of_grandeur psychology|
|2.||[ noun ] the act of deluding; deception by creating illusory ideas|
|Related terms:||deception deceive|
|3.||[ noun ] a mistaken or unfounded opinion or idea|
"he has delusions of competence" "his dreams of vast wealth are a hallucination"
|Related terms:||misconception disorientation hallucinate|