Definition |
Category |
| Austrian Schilling | Currencies |
| Against The Spread | Sports |
| Air Traffic Services | Military |
| Above Top Secret | Unclassified |
| Applicant Tracking System | Universities |
| American Thoracic Society | Societies |
| Automatic Transfer Switch | Telecom |
| Alternative Trading System | Stock Exchange |
| ArTerioSclerosis | Physiology |
| Angel The Series | News & Media |
| Australian Technology Showcase | General Business |
| Automation Tooling Systems | Unclassified |
| Automatic Transfer Service | Stock Exchange |
| Auxiliary Territorial Service | Military |
| American Tribal Style | Food & Nutrition |
| American Tarantula Society | Veterinary |
| Automatic Test System | Unclassified |
| Apple Type Services | Software |
| Automated Trading System | General Business |
| A P T Satellite Holdings, LTD. | NYSE Symbols |
| American Travel Survey | Transportation |
| Automatic Train Supervision | Transportation |
| Aviation Technical Services | Transportation |
| Application Technology Satellite | Ocean Science |
| All Together Separate | Manufacturing |
| Analytic Trouble Shooting | Law & Legal |
| Advanced Turbo Systems | Companies & Firms |
| Absolute Time Sequence | Electronics |
| Asynchronous Time Sharing | Networking |
| Automate The Schools | Politics |
| Anti-Theft System | Products |
| Angry Tradewind Survival | Meteorology |
| American Teaching System | Schools |
| Automatic Transfer System | Unclassified |
| Annual Training Site | Military |
| Across The Scope | Military |
| Advanced Tracking Sensor | Military |
| Air Tool Service | Unclassified |
| Advanced Transportation System | Transportation |
| Anxiety tension state | Physiology |
| Adaptive Threshold Sensing | Ocean Science |
| Advance Training System | Educational |
| Alternate Training Solutions | Educational |
| Alternative To Smoking | Community |
| At Title Screen | Assembly |
| Amalgamated Taxi Services | Companies & Firms |
| Aggravate The Secretaries | General Business |
| Airborne Tactical SIGINT (SIGnals INTelligence) | Military |
| Air Tools Store | General Business |
| Automatic Transfer Savings | Banking |
| Ashmore Technical Services | Unclassified |
| Advanced Teletext System | Unclassified |
| Almost Time Symmetric | Physics |
| Adolescent Thoughtless S | Unclassified |
| Acquired Tool Syndrome | Funnies |
| Alenco Tool Supply, Chicago, Illinois | Companies & Firms |
| Austen Tennis Superiority | Tennis |
| All Terrain Scooting | Unclassified |
| Advanced Tide System | Ocean Science |
| American Truck Simulator | Unclassified |
| Approved Teacher Status | Educational |
| Available to Ship | Unclassified |
| Air Turbine Starter | Aircraft & Aviation |
| Aidan The Stalker | Police |
| Academic Talent Search | Academic & Science |
| Adjustable Threadless System | Unclassified |
| American Technion Society | Societies |
| American Trauma Society | Societies |
| Airport Terminal Services | Aircraft & Aviation |
| American Tract Society | Societies |
| American Traffic Solutions | Unclassified |
| Autism Training Solutions | Autism |
| Atomic Test and Set | Unclassified |
| Advanced Trustee Strategies | Unclassified |
| Association Technology Solutions | Technology |
| Auburn Tru Soldiers | Unclassified |
| Advanced Technology Services | Technology |
| Advertising Technical Support | Advertising |
| Agreement to Serve | Unclassified |
| Association of Theological Schools | Associations |
| Avoiding Talented Seekers | Unclassified |
| A Total Surprise | Unclassified |
| Active Traction Service | Unclassified |
| Advanced Thermal Solutions | Unclassified |
| Advanced Torque Stability | Unclassified |
| Air Textured Soft | Unclassified |
| Always Teach Steering | Unclassified |
| Anderson Trucking Service | Unclassified |
| Annals of Thoracic Surgery | Surgical |
| Antarctic Treaty System | Unclassified |
| Anti-Terrorist Squad | Military |
| App Transport Security | Unclassified |
| Applied Technology Solutions | Technology |
| Austin Tele Services | Companies & Firms |
| Automated Technical Systems | Unclassified |
| Automated Telecomunication Systems | Unclassified |
| Automatic Total Station | Unclassified |
| Average Transaction Size | Unclassified |
| A Thousand Suns | Music |
| Air Traffic Service | Military |
| Airport Transit System | Transportation |
| Applied Technologies Staff | FDA |
| Artemis Alpha | London Stock Exchange |
| Asian Test Symposium | Conferences |
| Assign Terminal Service | Military |
| Auto-Thrust System | Aircraft & Aviation |
| Automatic Train Stop | Transportation |
| Salvage Tug (Auxiliary, Tug, Salvage) | Shipping & Sailing |
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