sort by Rank | Alpha
| Possible Meanings | Rank |
| Accrediting Alliance for Training and Development | *** |
| Antithrombotic and Thrombolytic Drugs | *** |
| Australian Accounting Taxation Database | *** |
| Accounting and Taxation Database | *** |
| Australian Accounting and Taxation Database | *** |
| Australian Association of Teachers of the Deaf | *** |
| Association of Teachers of the Deaf | *** |
| Applied Aviation Technology Directorate | ** |
| alpha 1-Antitrypsin deficiency | ** |
| alpha-1-antitrypsin deficiency | ** |
| Australian Agility Team Dog | ** |
| Alliance for Training and Development | * |
| Army Applied Technology Directorate | * |
| Across America in Ten Days | * |
| Associate of Advanced Technology Degree | * |