- USV [feminine] | unterbrechungsfreie Stromversorgung [feminine]
- UPS | uninterruptible power supply
- SAI [masculine] | sistema de alimentación ininterrumpida [masculine]
- источник бесперебойного электропитания [masculine] | ИБП
- ASI [feminine] | alimentation sans interruption [feminine]
- U-bolt
- U-bolt
- U-channel post
- U-profile
- U-rail
- U-value
- udder
- ultrafiltration
- ultrasonic cleaning system
- ultrasonic generator
- ultrasonic welder
- ultrasound head
- unassembled
- underfloor extraction
- unenriched cage
- uniform
- union
- union nut
- untreated gas
- up-and-over door
- upgrade kit
- upgrading the system
- UPS
- uric acid
- usable area
- USB flash drive
- use
- use of medication
- used water
- user manual
- utility model