| Abbreviation | Definition |
|---|---|
| SDSL | Screw Down, Screw Lift |
| SE | Specification Error |
| SICM | Structure and Interpretation of Classical Mechanics |
| SIF | Safety Integrated Function |
| SIL | Safety Integrity Levels |
| SKIZ | Skeletons by Influence Zones |
| SLAMS | Sentence Lines Answer Mechanics Support |
| SLAMS | Sentences Lines Answer Mechanics Support |
| SMAB | Smart Materials and Biomechanics |
| SMDG | Statistical Mechanics Discussion Group |
| SMDM | Solid Mechanics Design and Manufacturing |
| SMG | Sub Machine Gun |
| SMNI | Statistical Mechanics of Neocortical Interactions |
| SMSM | Soft Matter and Statistical Mechanics |
| SMTG | Statistical Mechanics and Thermodynamics Group |
| SNL | Service News Letter |
| SO | Slip On |
| SPMT | Self Propelled Modular Tranporter |
| SQUIM | Semantic Quantum Information Mechanics |
| SR | Spread Rolls |