Urine Monitoring System
Universal Modem System
Unified Messaging Service
Unified Messaging System
Unit Maintenance System
universal maintenance standards
Universal Messaging Service
Update Monitor System
Upper Main Sequence
Utilization Mission Services
ulnar mammary syndrome
ultrarapid metabolizers
ultrasonic motion sensor
UMTS Mobility Server
Unattended Machinery Space
Unattended MASINT Sensor
Underutilized Mediterranean Species
Underwater Monitoring System
undulating membranous structures
Unified Mail Service
Unified Messaging Server
Unified Messaging Systems
Uniform Mark Scale
Union Middle School
United Mexican States
Unitemp-M
Universal Manageability Services
Universal Management Service
Universal Map Sharing
Universal Measured Service