sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Afraid to Shoot Strangers | *** |
| Association for the Teaching of the Social Sciences | *** |
| Australasian Tuberous Sclerosis Society | *** |
| Abbotsford Traditional Secondary School | *** |
| Adult and Transfer Student Services | *** |
| Adult Training Support Service | *** |
| Autism Treatment Services of Saskatchewan | ** |
| articulated thoughts during simulated situations | ** |
| Active Total Security Systems | ** |
| Airway Transportation Systems Specialists | ** |
| Airborne Traffic Surveillance Systems | ** |
| Automotive Technical Support Services | ** |
| Aviation Training Support System | ** |
| Association for Traumatic Stress Specialists | ** |
| Advanced Transportation System Studies | ** |
| Adult Training and Support Services | ** |
| Association of Teachers of Social Sciences | ** |
| Air Turbine Starter System | ** |
| Association of Teachers of Social Studies | ** |
| Active Transit Station Signs | ** |
| Alliance of Technology and Science Specialists | ** |
| Articulated Thoughts in Simulated Situations | * |
| Anti Tilt Safety System | * |
| Automatic Test Support System | * |
| Air Traffic Services Subcommittee | * |
| American Tundra Shepherd Society | * |
| Aberdeen Test Support Services | * |
| Army Target Sensing Systems | * |
| Action Tracking System Strategy | * |
| Aero Triangulation System Software | * |