n :   1  :  absorption in self-centered subjective mental activity (as daydreams, fantasies, delusions, or hallucinations) esp. when accompanied by marked withdrawal from reality - compare DEREISM   2  :  a mental disorder originating in infancy that is characterized by self-absorption, inability to interact socially, repetitive behavior, and language dysfunction (as echolalia) .
 
 
 
Similar sounding terms:  au·to·some 
 
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