| Abbreviation | Definition |
|---|---|
| STEM | Storable Tubular Extendible Member |
| STEM | Stress Trajectories Element Method |
| STEM | Scanning Transmission Electron Micrographs |
| STEM | Scanning Transmission Electron Microscope |
| STEM | Scanning Transmission Electron Microscopic |
| STF | Space-Time-Frequency |
| STIM | Scanning Transmission Ion Microscopy |
| STK | Speedcore Terror Kinetic |
| STKC | Sonic-Tails-Knuckles-Channel |
| STL | Solid To Layer |
| STLR | Safety Thermal Limit Recorder |
| STM | Scanning Tunnelling Microscope |
| STN | Super-Twisted Nematic |
| STP | Space Time Product |
| STPD | Solar Terrestrial Physics Division |
| STS | scanning tunneling spectroscopy |
| STSP | Solar Terrestrial and Space Physics |
| STT | Spin Transfer Torque |
| STT | Spinning Tube in Tube |
| STV | Space-Time Velocity |