China
Africa
- Urban heat islands
- Urban metabolism
- Urban mining
- Urban runoff
- Urban sprawl
- Urban streams
- Urban villages
- Urban vitality
- Urbansim
- Urea
- Urea breath test
- Urea cycle
- Urea reduction ratio
- Urea-formaldehyde
- Urease
- Ureter
- Ureteroscopy
- Urethral
- Urethral sphincter
- Urethral strictures
- Urgent care
- Uric acid
- Uridine
- Uridine diphosphate
- Uridine monophosphate
- Urinalysis
- Urinary catheter
- Urinary incontinence
- Urinary retention
- Urinary system
- Urinary tract
- Urination
- Urine dipstick
- Urine specific gravity
- Urine test strips
- Urogynecology
- Urokinase
- Urolithin
- Urology
- Uronic acid
- Urothelium
- Urticaria
- Usability
- Usability engineering
- Usability goals
- Usability inspection
- Usability testing
- Usage-based insurance
- Use case diagram
- Use cases
- Use value
- Useful field of view
- User
- User agents
- User equipment
- User experience
- User identifier
- User information
- User innovation
- User interface
- User interface design
- User interface management system
- User interface markup language
- User modeling
- User profile
- User research
- User space
- User stories
- User story
- User-centered design
- User-defined functions
- Usher Syndrome
- Usnic acid
- Utah teapot
- Uterine cancer
- Uterine contractions
- Uterine fibroids
- Uterine rupture
- Uterus
- Utility
- Utility computing
- Utility frequency
- Utility helicopters
- Utility poles
- Utility tunnels
- Utility-scale solar
- Utilization factor
- Utilization rate
- Utricle
- Uvarovite
- Uveitis
- V engines
- V+
- V-ATPase
- V-model
- V-src
- V2G
- V2V
- V8
- V8 engine