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pervasive developmental disorder

noun
1.
autism spectrum disorder.
Abbreviation: PDD.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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pervasive develop-mental disorder in Medicine

pervasive developmental disorder per·va·sive developmental disorder (pər-vā'sĭv, -zĭv)
n.
Any of a group of disorders of infancy, childhood, or adolescence that are characterized by distortions in the development of the basic psychological functions such as language, social skills, attention, perception, reality testing, and movement.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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pervasive develop-mental disorder in Science
pervasive developmental disorder
  (pər-vā'sĭv)   
Any of several developmental disorders, such as autism or Asperger's syndrome, characterized by severe deficits in social interaction and communication or by the presence of repetitive, stereotyped behaviors. Most of these disorders are evident in the first years of life.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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