sort by Rank | Alpha
| Possible Meanings | Rank |
| Association of Colleges of Osteopathic | **** |
| Association of Clinical Oncology | **** |
| American Society for Clinical Oncology | **** |
| American Society of Clinical Oncologists | *** |
| American Society of Oncology | *** |
| American Society of Colon | *** |
| And Association of Community | *** |
| American Symphony Chamber Orchestra | *** |
| Association of Singer Car Owners | *** |
| Amity School of Communication | *** |
| Association of Southern California | *** |
| American Society Clinical Oncology | *** |
| American Society of Consultant | ** |
| A SPICE Circuit Optimizer | ** |
| An Society of Clinical Oncology | ** |
| Association of Schools of Optometry | ** |
| Association of Clinical Oncologists | ** |
| Assistant Soil Conservation Officer | ** |
| Archaeological Society of Central Oregon | ** |
| Amercian Society of Clinical Oncology | ** |
| American Society of Contemporary Ophthalmology | ** |
| Australian Shepherd Club of Ontario | ** |
| Alternate State Coordinating Officer | ** |
| Amer Soc of Clinical Oncology | ** |
| Advisory and Support Centre Otago | ** |
| Arab Satellite Communications Organization | * |
| Australian Services Canteen Organisation | * |
| Advanced Systems Concept Office | * |
| Arab Space Communications Organization | * |
| Advanced Servo Channel Optimization | * |
| American Society of Clinical Onology | * |
| Academy of Sciences Committee on Oceanography | * |
| Aircraft Sales of Central Ohio | * |