noun
- A condition (mostly in boys) characterized by behavioral and learning disorders.
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). ADHD. Retrieved September 21, 2026, from http://smartdefine.org/adhd/definitions/1254810 |
| Chicago | WordNet. 2010. "ADHD" http://smartdefine.org/adhd/definitions/1254810 (accessed September 21, 2026). |
| Harvard | WordNet 2010, ADHD, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/adhd/definitions/1254810>. |
| MLA | WordNet. "ADHD" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/adhd/definitions/1254810> |