| Acronym | Definition |
|---|
| STSI➣Scalable Time Slot Interchanger |
| STSI➣Space Telescope Science Institute |
| STSI➣Scripps Translational Science Institute (La Jolla, CA) |
| STSI➣State Table Size Index |
| STSI➣Surface Transportation Security Inspection (US TSA) |
| STSI➣Scalable Time-Slot Interchanger |
| STSI➣Sustav Tehnickih Servisa Inc (Croatian engineering company) |