| Abbreviation | Definition |
|---|---|
| SOS | Swap Operating Shell |
| SOSI | Shift-Out/Shift-In |
| SOW | Start Of Word |
| SP | Single Precision |
| SP | Stack Pointer |
| SP | System Procedure |
| SPA | Stop when Pizza Arrives |
| SPAR | Shreveport Public Assembly Recreation |
| SPARK | Scanning, Parsing, And Rewriting Kit |
| SPB | Simulate Peanut Butter |
| SPC | Service Program Code |
| SPL | Set Priority Level |
| SPL | Set Processor Level |
| SPM | Set Program Mask |
| SPM | Site Project Manager |
| SPM | Software Programmers Manual |
| SPT | Set Process Title |
| SPUR | Single Precision Unpacked Rounded |
| SQR | Square Root |
| SR | Shift Right |