n 1 a  :  the act of deluding  :  the state of being deluded  b  :  an abnormal mental state characterized by the occurrence of psychotic delusions  2  :  a false belief regarding the self or persons or objects outside the self that persists despite the facts and occurs in some psychotic states - compare HALLUCINATION1 ILLUSION2a   .
 
 
 
Similar sounding terms:  de·le·tion  di·la·tion  di·lu·tion 
 
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