sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Areas of Special Protection | ** |
| Asia and Oceania Society for Photobiology | ** |
| Association of Ophthalmic Science Practitioners | ** |
| Automatic Operating and Scheduling Program | ** |
| Alberta Oil Sands Project | * |
| Alternative Operator Service Providers | * |
| Army Operational Shooting Policy | * |
| Atmospheric and Oceanic Sciences Program | * |
| Advanced Onboard Signal Processor | * |
| Abandoned Oil Shows Plugged | * |
| Administrator for Obfuscatory Strategic Planning | * |
| All in One Search Page | * |
| Applied Ocean Science Program | * |
| Arcetri Observatory Solar Physics | * |