sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Air Traffic Control Services | *** |
| Automatic Tilt Calibration System | *** |
| Automatic Tube Cleaning System | *** |
| Air Traffic Control Specialists | *** |
| Adaptive Technology Computing Site | *** |
| Anti Terrorism Crime and Security | *** |
| Automatic Train Control System | *** |
| anterior tibial compartment syndrome | ** |
| ascending tonic-clonic seizure | ** |
| Advanced Train Control Systems | ** |
| adult onset tethered cord syndrome | ** |
| Air Traffic Control Service | ** |
| bead-activated T cells | ** |
| Asian Touring Car Series | ** |
| Adaptive Traffic Control System | ** |
| Air Traffic Control Squadron | ** |
| Allied Training Centre South | ** |
| Academic Technology and Creative Services | ** |
| Automatic Temperature Controlled Stowage | ** |
| Adaptive Traffic Control Systems | ** |
| Active Thermal Convection System | ** |
| Aide and Technician Certification Section | ** |
| Active Thermal Convective System | ** |
| Alternate Testing Center Supervisor | ** |
| Academic Technology and Computing Services | ** |
| Advanced Timed Channel Selection | ** |
| Automatic Turn Compensator System | ** |
| Auxiliary Telescope Control Software | ** |
| Active Thermal Control Systems | * |
| Active Thermal Control Subsystem | * |
| Advanced Traffic Control Systems | * |
| Approaches to Cognitive Science | * |
| Atlanta Telugu Christhava Samavesam | * |
| Air Traffic Communication Station | * |
| Air Traffic Control Squadrons | * |
| Army Tactical Communications System | * |
| Absolute Time Command Sequence | * |
| Australian Terrier Club of South | * |