| Meaning | Category |
| Ultimate Mail Tool | Computing->Software |
| Umiat, Alaska USA | Regional->Airport Codes |
| Unit Maintenance Team | Governmental->Military |
| Unit Ministry Team | Governmental->Military |
| Unit Of Medical Time | Medical Miscellaneous->Unit Measures |
| United Management Technologies | Business->Firms |
| United Methodist Temple | Community->Religion |
| Universal Microwave Technology, Inc. | Business->Firms |
| University of Management and Technology | Academic & Science->Universities |
| University of Montana | Academic & Science->Universities |
| Urban Mass Transportation Administration | Community->Educational |
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