sort by Rank | Alpha
| Possible Meanings | Rank |
| Collegiate Society of Advertising | **** |
| Committee on Substance Abuse | **** |
| China Ocean Shipping Agency | **** |
| Community Safety as A | **** |
| Committee on Sexual Assault | *** |
| Committee on Student Activities | *** |
| Circles of Support Accountability | *** |
| Council of Student Affairs | *** |
| City of St Augustine | *** |
| Central Okanagan Sailing Association | *** |
| Committee on South Africa | *** |
| Coronado School of the Arts | *** |
| Commission on Security Arrangements | *** |
| California Outdoor School Administrators | *** |
| Council on Scientific Affairs | *** |
| Council on Substance Abuse | *** |
| Canadian Oil Scouts Association | *** |
| Child Occupational Self Assessment | *** |
| Community Organizing and Social Administration | *** |
| Children of Substance Abusers | *** |
| Committee on Student Assessment | *** |
| Chinese Open Systems Association | *** |
| Committee on Student Affairs | *** |
| Clinical Oncology Society of Australia | *** |
| Council of Student Activities | *** |
| Coherent Object Software Architecture | ** |
| community-onset Staphylococcus aureus | ** |
| Central Oregon Songwriters Association | ** |
| Central Ohio Swimming Association | ** |
| Colorado Open Space Alliance | ** |
| Called on the Search | ** |
| Confederation of School Administrators | ** |
| Codependents of Sexual Addiction | ** |
| Circle of State Advisors | ** |
| Council for Occupational Standards and Assessment | ** |
| Coordinator of Student Affairs | ** |
| County Open Space Alliance | ** |
| Council of State Archives | ** |
| Crude Oil Sales Agreements | ** |
| Chamber Orchestra of South Africa | ** |
| Coastal Open Space Alliance | ** |
| Carwash Owners and Suppliers Association | ** |
| Circle of Support and Accountability | ** |
| Cost of Sales Adjustment | ** |
| County Services for the Aging | ** |
| Committee on Scientific Awards | ** |
| Council on Staff Affairs | ** |
| Central Oregon Symphony Association | ** |
| Central Ohio Sign Association | ** |
| commissural secondary ascending neurons | ** |
| Community Organization and Social Administration | ** |
| Couriers of San Antonio | ** |
| Central Oklahoma Sailing Association | ** |
| Coptic Orthodox Student Association | ** |
| Concilium on Southern Africa | ** |
| council of social action | ** |
| Cal Opportunity Scholars Assocation | ** |
| Committee on Special Awards | ** |
| Community Organization for Social Action | ** |
| Coalition on Southern Africa | ** |
| Coalition of Seniors Advocates | ** |
| Coordinator of Student Achievement | ** |
| Campaign to Open Source AmigaOS | ** |
| car occupant safety awareness | ** |
| Central Ohio Soaring Association | ** |
| Coastal Ocean Science Academy | ** |
| Council on Student Affairs | ** |
| Casino Operational Services Agreements | ** |
| Committee on Staff Affairs | ** |
| Council of Social Agencies | ** |
| Circle of Student Assistants | ** |
| Colorado Outdoor and Ski Association | ** |
| Chinese Outlook Studies Association | ** |
| Church of the Scientific Advent | ** |
| Codependents of Sexual Addicts | ** |
| Counselor on Special Assignment | ** |
| Child of Substance Abuser | ** |
| Canadian Orthopaedic Strategic Alliance | ** |
| Central Ohio Soccer Association | * |
| City of Oaks School of the Arts | * |
| Campus Organization for Social Activities | * |
| Cannington Old Students Association | * |
| Central Ohio Sustainability Alliance | * |
| Commercial Optical Storage Applications | * |
| Casino Operational Services Agreement | * |
| Celtic Order of St Adamnan | * |
| Clustal Ouput Structural Analysis | * |
| Contemplative Outreach San Antonio | * |
| California Optometric Student Association | * |
| Certified Ophthalmic Surgical Assistant | * |
| Complementary Objects for Software Applications | * |
| Coptic Orthodox Students Association | * |
| Canadian Organic Seed Alliance | * |
| Community Organization Social Administration | * |
| Council for Occupational Standards and Accreditation | * |
| Council for School Attorneys | * |
| CyberTrader Online Services Agreement | * |
| Cherkasy Oblast State Administration | * |
| Chernihiv Oblast State Administration | * |
| Chernivtsi Oblast State Administration | * |
| combat operations support airlift | * |
| Comparison of rock-mechanics computer codes for Salt | * |