sort by Rank | Alpha
| Possible Meanings | Rank |
| Arbitration and Conciliation Advisory | **** |
| Arizona Center on Aging | **** |
| Adult Child of an Alcoholic | **** |
| Atlantic Canada Opportunity Agency | *** |
| Alaska Commission on Aging | *** |
| And Adult Children of Alcoholics | *** |
| Atlantic Canadian Opportunities Agency | ** |
| Al-anon/Adult Children of Alcoholics | ** |
| Advisory Council on Aging | ** |
| Are Children of Alcoholics | ** |
| acyl-CoA oxidase PPRE | ** |
| anterior communicating artery aneurysm | ** |
| anterior communicating artery aneurysms | ** |
| Adaptive Courses of Action | ** |
| Atlantic Canada Opportunties Agency | ** |
| Atlantic Canada Opportunites Agency | ** |
| Administrative and Clerical Officers Association | ** |
| American County Officers Association | ** |
| Adult Children of an Alcoholic | ** |
| African Council of Organic Associations | * |
| Alaska Campground Owners Association | * |
| Acushnet Council on Aging | * |
| Alanon or Codependents Anonymous | * |
| Adult Child of Addiction | * |
| Adult Children of Addiction | * |
| All Colorado Opera Auditions | * |
| Allen Council on Aging | * |
| Admission to College Of Arts | * |
| Agriculture Council Of America | * |
| American College of Oncology Administrators | * |
| Area Closure Or Abandonment | * |