sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Architecture Research Unit | **** |
| Acute Rehab Unit | **** |
| Ageing Research Unit | **** |
| Alumni Relations Unit | **** |
| Auckland Rugby Union | **** |
| Agricultural Research Unit | **** |
| Army Rugby Union | *** |
| Allegheny Rugby Union | *** |
| Aquaculture Research Unit | *** |
| Arizona Rugby Union | *** |
| Amerindian Research Unit | *** |
| Accredited Residential Underwriter | *** |
| Addiction Research Unit | *** |
| American Railroad Union | *** |
| Autism Research Unit | *** |
| acoustics research unit | *** |
| Alarm Reporting Units | *** |
| Automated Repair Unit | *** |
| Armed Resistance Unit | *** |
| Advanced Research Unit | *** |
| A repeating units | ** |
| accident response units | ** |
| alcohol rehabilitation unit | ** |
| and Rehabilitation Unit | ** |
| Arthritis Rehabilitation Unit | ** |
| artificially reared undernourished | ** |
| Alleanza Repubblicana Universale | ** |
| Atherosclerosis Research Unit | ** |
| army recruiting unit | ** |
| Aircraft Retained Unit | ** |
| Acute Retention of Urine | ** |
| Academic Records Unit | ** |
| Archive Research Unit | ** |
| L-arginine utilization | ** |
| Animal Rescue Unit | ** |
| Amine Recovery Unit | ** |
| All Received Up | ** |
| Access Response Unit | ** |
| Alternate Reality Universe | ** |
| Audio Recording Unlimited | ** |
| Automatic Response Units | ** |
| And Audio Response Unit | ** |
| Automatic Restart Unit | ** |
| Acoustic Resistance Unit | ** |
| Alarm Receiver Unit | ** |
| Autonomous Recording Units | ** |
| Analytical Role Unclassified | ** |
| Association of Radiologists of Ukraine | ** |
| Animal Registry Unlimited | ** |
| Auxiliary Rescue Units | ** |
| Amphibious Reconnaissance Unit | ** |
| Autonomous Recording Unit | ** |
| Australian Reinforcement Unit | * |
| Airborne Radar Unit | * |
| Australian Railway Union | * |
| Abnormal Release User | * |
| Airspace Reservation Unit | * |
| Alternative Reporting Unit | * |
| Acoustic Recording Units | * |
| Audio Reproducer Unit | * |
| Activation Request Upstream | * |
| ALARM RECEIVING UNIT | * |
| Animal Resources Unit | * |
| Army Reserve Unit | * |
| acceleration recording unit | * |
| Airborne Radar Unit, Airspace Reservation Unit (Canada) | * |
| Alcoholic Rehabilitation Unit | * |
| Archeological Research Unit | * |
| Arkona Recording Unit | * |