U | Unlimited
| Others |
U | Unlocked
| Others |
U | Unlucky
| Others |
U | Unmodified
| Others |
U | Unofficial
| Others |
U | Unplasticised
| Others |
U | Unredacted
| Others |
U | Unreliable
| Others |
U | Unsatisfactory
| Others |
U | Unsigned
| Others |
U | Unterseeboot
| Others |
U | Unusual
| Others |
U | Unwind tape
| Others |
U | Up
| Others |
U | Upbuilding
| Others |
U | Update
| Others |
U | Uphill
| Others |
U | Upper
| Others |
U | Upsilon
| Others |
U | Uracil
| Others |
U | Uranium
| Element |
U | Urban
| Others |
U | Urgent
| Others |
U | Ursula
| Others |
U | Use
| Others |
U | Useless
| Others |
U | User
| Others |
U | Userid
| Others |
U | Users
| Others |
U | Wind Speed
| Others |
U | You
| Others |
U of G | University of Guelph
| Others |
U OF K | University of Khartoum
| Others |
U OF MAHDI | University of Elimam Elmahdi
| Others |
U&A | Usage & Attitudes
| Others |
U&C | Usual & Customary
| Others |
U&C | Usual and Customary
| Others |
U&E | Urea & Electrolites (potassium, sodium, carbon dioxide, and chloride)
| Others |
U&E | Urea & Electrolytes - blood test
| Others |
U&E's | Urea and Electrolytes
| Others |
U&L | Upper And Lower
| Others |
U&LC | Uppercase and Lowercase
| Others |
U&LRA | Upper and Lower Radius Arms
| Others |
U&LW | Upper and Lower Wishbones
| Others |
U&M | Units & Measurements
| Others |
U&MNP | Ulnar And Median Nerve Palsy
| Others |
U&MPV | Utility and Multi Purpose Vehicle
| Others |
U&P | Username and Password
| Others |
U&R | Update and Restore
| Others |
U-ACH | UKC (United Kennel Club) Agility CHampion
| Others |