| Abbreviation | Definition |
|---|---|
| BT | bleaching treatment???dentistry |
| BT | bleaching treatmentdentistry |
| BT | bleaching treatment–dentistry |
| BT | blood transfusion |
| BT | blood type |
| BT | bluetongue |
| BT | body temperature |
| BT | borderline tuberculoid |
| BT | brachytherapy |
| BT | brain tumour |
| BT | break through |
| BT | breast tumour |
| BT | breath test |
| BTA | bladder tumour antigen (BTA) |
| BTA | Blood and Transplant Authority, formally, the NHS Blood and Transplant Authority |
| BTA | botulinum toxin A |
| BTA | British Thyroid Association |
| BTEC | British and Technical Education Council |
| BTEG | Black Training and Enterprise Group |
| BTS | Blalock Taussig shunt |