pervasive developmental dis-order

noun

autism spectrum disorder. Abbreviation: PDD

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To pervasive developmental dis-order

American Heritage

Medical Dictionary

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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00:10

Pervasive developmental dis-order is always a great word to know.

So is interrobang. Does it mean:

a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.

a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.

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American Heritage

Science Dictionary

pervasive developmental disorder

(pər-vā'sĭv) Pronunciation Key
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.

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