| Abbreviation | Definition |
|---|---|
| ADDISS | Attention Deficit Disorder Information and Support Service |
| ADDL | Associazione Dislessia Discalculia Lodi |
| ADDL | Atlanta Doubles Dart League |
| ADDL | Autism and Developmental Disorders Lab |
| ADDLE | Addled |
| ADDLE | Addling |
| ADDM | Application Discovery and Dependency Mapping |
| ADDM | Atrium Discovery and Dependency Mapping |
| ADDM | Autism Developmental Disabilities Monitoring |
| ADDN | Australasia Diabetes Data Network |
| ADDN | Australasian Diabetes Data Network |
| ADDP | A Digi Discovery Protocol |
| ADDP | Advanced Device Discovery Protocol |
| ADDP | Advanced Digi Discovery Protocol |
| ADDP | Advanced Disconnect Detection Protocol |
| ADDR | Advanced Drug Delivery Reviews |
| ADDR | Air Data Dead Reckoning |
| ADDR | Air Data Dead Reckoning?? |
| ADDR | Attention Deficit Disorder Resources |
| ADDR | Automated Dyadic Data Recorder |