sort by Rank | Alpha
| Possible Meanings | Rank |
| control units | **** |
| Care Units | **** |
| Community United | **** |
| Canadian Utilities | **** |
| College Used | **** |
| CERVECERIAS UNIDAS | *** |
| Consumptive Use | *** |
| Cataloging Unit | *** |
| Central US | *** |
| Catalog Unit | *** |
| Campbellsville University | *** |
| Coordinating Unit | *** |
| Clemson University (Clemson, SC) | *** |
| Cleveland UMADAOP (Cleveland, OH) | *** |
| Collection at the University | *** |
| Computing Unit | *** |
| Chemistry Undergraduate | *** |
| Center UCD | *** |
| Cellulase Unit | *** |
| CREDIT UNION/SPACE | *** |
| Compatible Unit | *** |
| Cataloging Units | ** |
| CINCINNATI UNION | ** |
| Cellulase Units | ** |
| configuration units | ** |
| clinical units | * |
| Computing Units | * |
| Conservation the University | * |
| Cooperating Units | * |
| Covert Untouchables | * |
| Commodity Utilization | * |
| Cincinnati University | * |
| CLASSIFICATION UU | * |
| coefficient of uniformity | * |
| Coefficient of Utilization | * |