attention deficit hyperactivity disorder: a medical condition that makes someone more active than normal, makes it difficult for them to concentrate, and causes problems with their behaviour
Synonyms and related words
Specific medical conditions
acidity
acne
ADD
ADHD
noun uncountable medical
US /ˌeɪ di eɪtʃ ˈdi/
DEFINITIONS1
1
attention deficit hyperactivity disorder: a medical condition that makes someone more active than normal, makes it difficult for them to concentrate, and causes problems with their behavior