| STO | store |
|---|---|
| stom | stomach |
| STONE | Shanghai Trial of Nifedipine in the Elderly |
| STOP | Study of Hypertension in the Elderly [Sweden] or Swedish Trial in Old Patients with Hypertension; surgical termination of pregnancy |
| STOP | 2 Swedish Trial in Old Patients with Hypertension 2 |
| STORCH | syphilis, toxoplasmosis, rubella, cytomegalovirus, and herpesvirus |