[1] Structure Information Store
[2] Standardiseringskommissionen I Sverige
[3] Strategic Information System
[4] Satellite Interception System (->"IEEE Standard Dictionary")
[5] Semiconductor-Isolator-Semiconductor (->"IEEE Standard Dictionary")
[6] Shorter Intervall Scheduling (->"IEEE Standard Dictionary")
[7] Simulation Interface Subsystem (->"IEEE Standard Dictionary")
[8] Software Information Services
[9] Sishen, South Africa - internationale Fughafen-Kennung