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ADHD

[ ey-dee-eych-dee ]
/ ˈeɪˌdiˈeɪtʃˌdi /
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abbreviation, noun
attention deficit hyperactivity disorder: a condition, usually apparent in childhood but often persisting into adulthood, characterized by difficulties with executive function, lack of focus, hyperactivity, and/or impulsiveness: The three subtypes of ADHD are inattentive, hyperactive-impulsive, and combined.
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Origin of ADHD

First recorded in 1985–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use ADHD in a sentence

British Dictionary definitions for ADHD

ADHD

abbreviation for
attention deficit hyperactivity disorder
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

Medical definitions for ADHD

ADHD

abbr.
attention deficit hyperactivity disorder
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for ADHD

ADHD

Abbreviation of attention deficit hyperactivity disorder
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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