de-lu-sion
Pronunciation:duh-loo-zhun,
Function:noun
Inflected Form:-s
Etymology:Middle English delusioun, from Latin delusion-, delusio, from delusus (past participle of deludere to delude) + -ion-, -io -ion * more at DELUDE
1 : act of deluding or state of being deluded; often : a misleading of the mind *such pleasures end in delusion* : an abnormal mental state characterized by occurrence of delusions
2 : something that is falsely or delusively believed or propagated : false belief or a persistent error of perception occasioned by false belief or mental derangement : customary or fixed misconception *cling to a delusion*: as a : a false conception and persistent belief unconquerable by reason in something that has no existence in fact b : a false belief regarding the self or persons or objects outside the self that persists despite the facts and is common in paranoia, schizophrenia, and psychotic depressed states *delusions of grandeur