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attention deficit hyperactivity disorder

a condition, usually in children, characterized by inattention, hyperactivity, and impulsiveness.
Origin of attention deficit hyperactivity disorder
1985-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for attention-deficit-hyperactivity-disorder

attention deficit hyperactivity disorder

a form of attention deficit disorder in which hyperactivity is a prominent symptom ADHD
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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attention-deficit-hyperactivity-disorder in Science
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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