| Abbreviation | Definition |
|---|---|
| SIR | Sustained Information Rate |
| SIR | System Internal Resource |
| SIRDS | Single Image Random Dot Stereogram |
| SIS | Saws Information System |
| SIT | Software Image Transitions |
| SIT | Some Image Type |
| SIT | System Initialization Table |
| SITES | Standard Information Topic Exchange System |
| SIV | System Information Viewer |
| SJF | Shortest Job First |
| SJT | Simple Java Thread |
| SKC | Scalable Knowledge Composition |
| SKE | Spatial Knowledge Engineering |
| SKL | Systems Knowledge Link |
| SKP | Small Key Pad |
| SL | Source Statement Library |
| SLA | Sample Log Analysis |
| SLAM | Syntactic Language Abstraction Method |
| SLATE | Second Level Architecture Test Environment |
| SLC | System Life Cycle |