from The American Heritage® Dictionary of the English Language, 4th Edition
- abbr. attention deficit disorder
from Wiktionary, Creative Commons Attribution/Share-Alike License
- Attention deficit disorder.
- Accidental death and dismemberment.
- A designation on prerecorded compact discs indicating that the contents were recorded in analog but mixed and mastered in digital; compare AAD, DAD, DDD.
Sorry, no etymologies found.