attention deficit hyper-activity disorder

attention deficit hyperactivity disorder

noun
a condition, usually in children, characterized by inattention, hyperactivity, and impulsiveness.

Origin:
1985–90

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World English Dictionary
attention deficit hyperactivity disorder
 
n
ADHD a form of attention deficit disorder in which hyperactivity is a prominent symptom

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
attention deficit hyperactivity disorder  
A syndrome of disordered behavior, usually diagnosed in childhood, characterized by a persistent pattern of impulsiveness, inattentiveness, and sometimes hyperactivity that interferes with academic, occupational, or social performance. Also called attention deficit disorder.
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