sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| American Society for Therapeutic Radiation and Oncology | **** |
| American Society for Therapeutic Radiology Oncology | *** |
| Antarctic Submillimeter Telescope and Remote Observatory | *** |
| American Society of Therapeutic Radiation and Oncology | *** |
| American Society for Therapeutic Radiation Oncology | *** |
| American Society of Therapeutic Radiation Oncology | *** |
| Autonomous Space Transport Robotic Operations | ** |
| Age Sex Temporary Resident Originated | ** |
| American Society Therapeutic Radiology and Oncology | ** |
| Association of State Trading Organizations | ** |
| Autonomous Space Transporter and Robotic Orbiter | ** |
| American Society of Radiation Oncology | * |
| American Society for Therapeutic Radiologic and Oncology | * |
| American Staffordshire Terrier Representative Organization | * |
| Autonomous Space Transfer and Robotic Orbiter | * |
| Advanced Short Term Research Opportunities | * |
| Atlantic Seaboard Tandem Racing Organization | * |
| Army Space Technology and Research Office | * |
| Advanced Systematic Techniques for Reliable Operational | * |