Wordnet 3.0
NOUN (1)
1.
a condition (mostly in boys) characterized by behavioral and learning disorders;
[syn: attention deficit disorder, ADD, attention deficit hyperactivity disorder, ADHD, hyperkinetic syndrome, minimal brain dysfunction, minimal brain damage, MBD]
WordNet (r) 3.0 (2006):
attention deficit disorder
n 1: a condition (mostly in boys) characterized by behavioral
and learning disorders [syn: attention deficit disorder,
ADD, attention deficit hyperactivity disorder, ADHD,
hyperkinetic syndrome, minimal brain dysfunction,
minimal brain damage, MBD]