attention deficit disorder

attention deficit disorder

noun
1.
a condition, usually in children, marked by inattentiveness, dreaminess, and passivity. Abbreviation: ADD
2.
(no longer in technical use) attention deficit hyperactivity disorder.

Origin:
1980–85

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World English Dictionary
attention deficit disorder
 
n
ADD a disorder, particularly of children, characterized by excessive activity and inability to concentrate on one task for any length of time

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Etymonline
Word Origin & History

attention deficit disorder
(abbreviated ADD) became a diagnosis in the third edition of the "Diagnostic and Statistical Manual of Mental Disorders" (1980); expanded to attention deficit hyperactivity disorder ("the co-existence of attentional problems and hyperactivity, with each behavior occurring infrequently alone;" ADHD) in
DSM-III (1987).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

attention deficit disorder at·ten·tion deficit disorder (ə-těn'shən)
n.
Abbr. ADD

  1. A childhood syndrome characterized by impulsiveness and short attention span, and sometimes by hyperactivity that often leads to learning disabilities and various behavioral problems.

  2. See minimal brain dysfunction.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Cultural Dictionary
Attention Deficit Disorder (ADD)

A disorder characterized by a difficulty in retaining focus, especially on tasks, for long periods of time.

Note: One of the most common reasons children are brought into therapy, ADD is often treated with the somewhat controversial drug Ritalin®, which is thought to work by stimulating the attention-focusing structures of the brain.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
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Published by Houghton Mifflin Company. All rights reserved.
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