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pervasive developmental disorder

autism spectrum disorder.
Abbreviation: PDD.

autism spectrum disorder

noun, Pathology.
any of various disorders, as autism and Asperger syndrome, commonly manifesting in early childhood and characterized by impaired social or communication skills, repetitive behaviors, or a restricted range of interests.
Also called autistic spectrum disorder, pervasive developmental disorder.
See also spectrum disorder.
Origin of autism spectrum disorder
1990-95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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pervasive-developmental-disorder in Medicine

pervasive developmental disorder per·va·sive developmental disorder (pər-vā'sĭv, -zĭv)
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-developmental-disorder in Science
pervasive developmental disorder
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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