| Abbreviation | Definition |
|---|---|
| UTL | Upper Tolerance Limit |
| UTO | Upper Thoracic Outlet |
| UTOC | Upper thoracic outlet compression syndrome |
| UTS | Upper Thigh Separation |
| UTW | Universal Total Wrist system |
| UUF | Uraemic Ultra- Filtrate |
| UUI | Urge Urinary Incontinence |
| UUK | phlebovirus Uukuniemi |
| UUO | Unilateral Ureteral Obstruction |
| UV | Ultra-Violet |
| UV | Urinary Volume |
| UVD | Unilateral Vestibular Deafferentation |
| UVD | Upper Vas Deferens |
| UVJ | Uretero- Vesical Junction |
| UVL | Ultra- Violet light |
| UVL | Ultra-Violet light |
| UVN | Unilateral Visual Neglect |
| UVR | Ultraviolet radiation |
| UVR | Ultra-Violet radiation |
| UVSM | Uterine Vascular Smooth Muscle |