| Abbreviation | Definition |
|---|---|
| TGA | Therapeutic Goods Administration |
| TGA | Therapeutic Goods Administration (Australia) |
| TI | Tolerable Intake |
| TIACC | Therapeutic Inequivalence Action Coordinating Committee |
| TID | three times a day |
| TIFF | tagged image file format |
| TIND | Treatment Investigational New Drug |
| TK | ToxicoKinetics |
| TLC | Thin Layer Chromatography |
| TLV | Threshhold Limit Value |
| TMJ | temporomandibular joint |
| TMJ | Temporo-Mandibular Joint |
| TMO | Trial Management Organization |
| TNTC | Too Numerous To Count |
| TO | table of oganization |
| TOI | Trial Outcome Index |
| TOL | total organic carbon |
| TOPOFF | TOP OFFicials |
| TOPRA | The Organisation for Professionals in Regulatory Affairs |
| TOR | Threshold Of Regulation |