| Abbreviation | Definition |
|---|---|
| MSI | Multispeed Internal Clock |
| MSI | Music or Speech Item |
| MSIE | M S I Electronics |
| MSIPC | Microsoft Simply Interactive Personal Computer |
| MSK | Minimum Shift Keying |
| MSL | Modify System Logging |
| MSL | Moisture Sensitivity Level |
| MSM | Metal-Semiconductor-Metal |
| MSP | Microsoft Paint image format |
| MST | Magneto-Strictive Transducer |
| MST | Micro System Technology |
| MST | Micro Systems Technology |
| MST | MicroSecond Trip |
| MST | Monolithic Systems Technology |
| MSTAB | Manufacturing Systems Technical Advisory Board |
| MT | Micro Tubules |
| MT | Multi-Tap |
| MTB | Main Terminal Box |
| MTB | Motor Terminal Box |
| MTBA | Mean Time Between Assists |