sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Around the Operating System | *** |
| Angeles Theatre Organ Society | *** |
| Advantage TASA Open Standard | *** |
| American Theater Organ Society | *** |
| Australian Treatment Outcomes Study | ** |
| anti-human tonsil serum | ** |
| Air Transport Oversight System | ** |
| AF Technical Order System | ** |
| Advanced Technology Operations System | ** |
| Association Travail Occasionnel Service | ** |
| ASWOC Tape Operating System | * |
| Austria Truck Omnibus Schiemer | * |
| Air Traffic Operations Simulation | * |
| Aztec Trails and Open Space | * |
| Abone Takip Otomasyon Sistemi | * |
| Agents Techniques Ouvriers Service | * |
| Advanced Transmission and Oil System concepts | * |
| Anti Turbidity Overflow System | * |
| Advanced Transport Operating Systems | * |
| Application of an integrated, modular, metric based Test concept for Object Oriented Software Systems | * |