autist

Science Dictionary
autism   (ô'tĭz'əm)  Pronunciation Key 
A developmental disorder characterized by severe deficits in social interaction and communication and by abnormal behavior patterns, such as the repetition of specific movements or a tendency to focus on certain objects. Autism is evident in the first years of life. Its cause is unknown.

autistic adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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