| Abbreviation | Definition |
|---|---|
| TIP | terminal interphalangeal |
| TIP | translation-inhibiting protein |
| TIS | Technical Information Services |
| TIS | Technical Informations Services |
| TIS | tetracycline-induced steatosis |
| TIS | titanium interbody spacer |
| TIS | totally implantable system |
| TIS | toxic infectious shock |
| TIS | triage illness scale |
| TIS | trypsin-insoluble segment |
| TLA | theta-like activity |
| TLA | thymus leukaemia antigen |
| TLA | time-limited admission |
| TLA | translumbar aortogram |
| TLA | translumbar aortography |
| TLA | transluminal angioplasty |
| TLA | tumescent local anaesthesia |
| TLC | Tender loving care - what you need when the doctors have finished with you |
| TLOC | Total Loss Of Consciousness |
| TMB | theoretical mechanistic biochemistry |