sort by Rank | Alpha
| Possible Meanings | Rank |
| America String Teachers Association | **** |
| Association of Travel Agencies | *** |
| Association of Tourism Agencies | *** |
| American Society of Association | *** |
| Advanced Science and Technology Adjudication | *** |
| American String Teacher Association | *** |
| Area of Specialization Applied | *** |
| Aircrew Synthetic Training Aids | *** |
| Associations and of the American | *** |
| Access Storage and Transfer | *** |
| Autonomous Systems of Trade Agents | *** |
| Advanced Software Technology and Agorithms | *** |
| And Science Teachers Association | ** |
| Accelerator Structure Test Area | ** |
| America Society of Travel Agents | ** |
| American Strings Teachers Association | ** |
| Advanced Support for TeraGrid Applications | ** |
| Arizona State Trapshooting Association | ** |
| American Society of Tropical | ** |
| Association for Scottish Traditions and Arts | ** |
| American Spice Traders Association | ** |
| Ale Smrud TO ASTORIA | ** |
| Australian Spasmodic Torticollis Association | ** |
| American Society of Architect | ** |
| American Society of Associated | ** |
| Australian Sleep Technologists Association | ** |
| Australian Shepherd Trial Association | ** |
| Aero Science Technology Associates | * |
| Aerial Surveillance and Target Acquisition | * |
| Affordable Sensor Technology for Aerial | * |
| America Seed Trade Association | * |
| American Seed Testing Association | * |
| Australian Services Triathlon Association | * |
| Australasian Sleep Technologist Association | * |
| American Society of Agents | * |
| American Society Travel Agency | * |
| AR Science Teachers Assoc | * |
| Association of Spanish Travel Agents | * |
| Australian Society of Anaesthetic | * |
| Australian Software Testing Association | * |
| Assistant Secretary for Territorial Affairs | * |
| Athena Star Trek Archive | * |