| Abbreviation | Definition |
|---|---|
| TWH | Toronto Western Hospital |
| TWOC | Trial WithOut Catheter |
| TWOP | The Wellness Opinion Person |
| TZD | Thiazolidinedione |
| U/A | UrinAnalysis |
| UA | Ultrasonic Arteriography |
| UA | Unitary Authority |
| UA | Upper Airway |
| UA | Uterine Activity |
| UACDS | Uniform Ambulatory Care Data Set |
| UAH | University Animal Hospital |
| UAH | University Of Alberta Hospital |
| UBR | Uniform Business Rate |
| UBTH | University of Benin Teaching Hospital |
| UC | Urgent Care |
| UCC | Urgent Care Center |
| UCC | urgent care clinic |
| UCD | Ultrasonic Coagulation Device |
| UCH | University College Hospital Ibadan |
| UCH | University of Chicago Hospital |