| Abbreviation | Definition |
|---|---|
| ADDRESS | Addresses |
| ADDRESS | Addressing |
| ADDRO | Anglican Diocesan Development and Relief Office |
| ADDRO | Anglican Diocesan Development and Relief Organisation |
| ADDS | A Domestic Discipline Society |
| ADDS | Active Domain Directory Service |
| ADDS | Advanced Digital Dispensing System |
| ADDS | Africa Data Dissemination Service |
| ADDS | Alcohol and Drug Dependency Services |
| ADDS | Applied Digital Data Systems |
| ADDS | Automated Data Delivery System |
| ADDT | abbreviation Define ADDT at |
| ADDT | Accelerated destructive degradation tests |
| ADDT | Active Directory Domains and Trusts |
| ADDT | Adult Developmental Day Treatment |
| ADDT | Advance Data Driven Testing |
| ADDT | Advanced Data Driven Testing |
| ADDT | AIDS Discovery and Development of |
| ADDT | AIDS Discovery and Development of Therapeutics |
| ADDT | American Dance/Drill Team |