Medical Dictionary
Main Entry:
au·tism Pronunciation:
'o-"tiz-&m Function:
noun : a developmental disorder that appears by age three and that is variable inexpression but is recognized and diagnosed by impairment of the ability to form normal social relationships, by impairment of the ability to communicate with others, and by stereotyped behaviorpatterns especially as exhibited by a preoccupation with repetitive activities of restricted focus rather than with flexible and imaginative ones