sort by Rank | Alpha
| Possible Meanings | Rank |
| Units of Competence | **** |
| University Of Charleston | **** |
| University Of Cyprus | **** |
| University Of Canberra | **** |
| University Outreach Center | **** |
| University Of Cantabria | **** |
| University Of Campinas | *** |
| University Of Catania | *** |
| Union of Orthodox Citizens | *** |
| University Outreach Committee | *** |
| Units of Competency | *** |
| University of Coimbra | *** |
| Undergraduate Organizing Committee | *** |
| University Of Craiova | *** |
| Unit Operations Center | *** |
| Union Oil Company | *** |
| unsaturated organic compounds | ** |
| University of Cornel | ** |
| University of Oregon Center | ** |
| Universitat Obertade Catalunya | ** |
| University of Oregon Chemistry | ** |
| University of Oklahoma Center | ** |
| Useable On Code | ** |
| University of Oklahoma Chemistry | ** |
| Unit Operation Centers | ** |
| usabll on codes | ** |
| Uranium Ore Concentrate | ** |
| Uniform Offering Circular | ** |
| unit owners committee | ** |
| Ultra Optics Company | ** |
| Uzumba Orphan Care | ** |
| Ultrafast Optical Clock | * |
| Unit Operations Centers | * |
| Universal Output Computer | * |
| University Of Cantho | * |
| Unit Operational Command | * |
| University Oncological Center | * |
| Uranium Ore Concentrates | * |
| Used Oil Coordinator | * |
| University of Oklahoma Chemical | * |
| Ugliest Office Contest | * |
| University of Oklahoma Counseling | * |
| University of Ottawa Chemistry | * |
| Underground Opening Closures | * |
| University Of Calforina | * |
| University of Oklahoma Counselin | * |
| University of Otago Chemistry | * |
| University Oldenburg Chemistry | * |