| Abbreviation | Definition |
|---|---|
| STC | Specialty Training Committee* |
| STC | Steroid Treatment Card |
| STD | ST-segment depression |
| STEIS | Strategic Executive Information System |
| STEP | serial transverse enteroplasty |
| STEP | Standards Enforcement in Procurement |
| STEP | striatal enriched phosphatase |
| STEP | Surgical Training and Education Programme (STEP course) |
| STG | Special Transitional Grant |
| StHA | Strategic health authority |
| STI | science and technology information |
| STI | serum trypsin inhibitor |
| STI | sexually-transmitted infection |
| STIR | Short TI Inversion Recovery |
| STKH | stakeholder |
| STP | Sustainability and Transformation Partnerships |
| STP | Sustainability and Transformation Plan |
| STR | scotopic threshold response |
| STR | seven transmembrane receptor |
| STR | short tandem repeat |