| Acronym | Meaning |
 | ARSC | Arctic Region Supercomputing Center |
| SAAB | Svenska Aeroplan AB (Swedish Aircraft And Automobile Manufacturer) |
| SBCS | Single-Byte Character Set |
| SOHO | Solar And Heliospheric Observatory |
| ACR | Advanced Concepts And Requirements |
| MAS | NATO Military Agency For Standardisation |
| SND | Sindhi Language (ISO 639-2 Code) |
| SACLOS | Semi-Automatic Command To Line Of Sight |
| SQ | Albanian Language (ISO 639-1 Code) |
| DSAA | (U.S.) Defense Security Assistance Agency |
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