sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Online Automated Recruitment System | **** |
| Operating an Amateur Radio Station | *** |
| Older Americans Resources and Services | *** |
| Older American Resources and Services | *** |
| Offenders Aid Rehabilitation Services | *** |
| Orlando Area Rowing Society | *** |
| Olympia Amateur Radio Society | *** |
| Office for the Advancement of Research and Scholarship | *** |
| Omega Aerial Refueling Services | *** |
| Old Anacortes Rowing Society | *** |
| Organization of American States | *** |
| Otley Amateur Radio Society | *** |
| Offenders Aid and Rehabilitation Services | *** |
| OKLAHOMA APPLIED RESEARCH SUPPORT | ** |
| Older Adult Resources Survey | ** |
| Older Americans Research Survey | ** |
| Older Americans Resource Survey | ** |
| Older Americans Resources Scale | ** |
| Older Americans Resources Services | ** |
| Optimal Atherectomy Restenosis Study | ** |
| Online Assessment Roll System | ** |
| Office of Animal Research Services | ** |
| Office of Academic and Research Services | ** |
| Older Americans Resource and Services | ** |
| Older Americans' Resources and Services | ** |
| Opening Automated Report Service | ** |
| Okanagan Advocacy and Resource Society | ** |
| Online Assessment and Reporting System | ** |
| Ozarks AIDS Resources Services | ** |
| Office and Administrative Resource Scheduling | ** |
| Older Americans Resources and Services Survey | ** |
| Outlying Area Reporting System | ** |
| Online Accident Reporting System | ** |
| Office of Administrative Research Services | ** |
| Outlying Area Reporting Stations | ** |
| Online Achievement and Reporting System | ** |
| Opening Automated Reporting System | ** |
| Operational Airborne Research Spectrometer | ** |
| Opening Automated Reporting Service | ** |
| Outpatient Addictions Rcvry Srvc | ** |
| Online Assessment Reporting System | ** |
| okanagan advocacy resource society | ** |
| Older Americans Research and Service | ** |
| Orientation Assessment Referral and Safety | ** |
| Oriented Architecture for Reactive Systems | ** |
| Open Access Rewards System | ** |
| Of the Office of Admissions and Relations | ** |
| Organization of Adult Returning Students | ** |
| OIT Availability and Recovery Site | ** |
| Online Annual Reporting System | ** |
| Orientation Assessment Referral Safety | ** |
| Open Architecture Retrieval System | ** |
| Offender Aid and Rehabilitation Services | * |
| Oregon Automated Reporting System | * |
| Outstanding All Rounder Student | * |
| Ocoee Amateur Radio Society | * |
| Office of Administrative Rules | * |
| Omega Alpha Recycling Systems | * |
| Office of the American Rhododendron Society | * |
| Online Academic Record System | * |
| Online Achievement Reporting System | * |
| Online Application Registration System | * |
| Online Adoption and Reporting Survey | * |
| Orders Associates Research Systems | * |
| Organic Acid Removal System | * |
| Office of Academic Records Services | * |
| Open Access Reward System | * |
| Open Architecture Registry System | * |
| Outdoor Activities and Recreational Society | * |
| Outreach to at Risk Seniors | * |