| Abbreviation | Definition |
|---|---|
| SOS | Silicon On Sapphire |
| SOT | Small Outline Transistor |
| SOTA | State Of The Art |
| SOTC | Simplified Optimal Trajectory Control |
| SOW | Statement Of Work |
| SoX | Sound eXchange |
| SP | Signal Processor |
| SP | Solar Pannel |
| SPAR | Signal Processing At RF |
| SPARC | Scalable Processor ARChitecture |
| SPC | Series Parallel Capacitor |
| SPC | Short Pulse Characteristic |
| SPC | Sound Processing Core |
| SPCTF | System Protection and Control Task Force (North American Electric Reliability Corporation) |
| SPCW | Stored Program Command Word |
| SPD | Silicon Photo Diode |
| SPDBC | Simultaneous Peak Detection and Baseline Correction |
| SPDT | Single Pole, Double Throw |
| SPEC | South Plains Electric Cooperative |
| SPEC | South Plains Electric Cooperative's |