| Abbreviation | Definition |
|---|---|
| MSAS | Multi-functional Satellite Augmentation System |
| MSAVP | Microsoft Anti Virus Program |
| MSB | Most Significant Bit |
| MSBD | Main Swich Board |
| MSC | Multiple Sidelobe Canceller |
| MSD | Multi-Spark Discharge |
| MSDA | Material safety data sheet |
| MSDP | Multi-channel Subtractive Double Pass |
| MSDS | Material Safety Data Sheet |
| MSE | Multispeed External Clock |
| MSEG | Magnetic Siphon Electric Generator |
| MSEM | Metrology Specific Equipment Model |
| MSEP | Main Street Electrical Parade |
| MSET | Morgan Stanley Electronic Trading |
| MSEW | Motherson Sumi Electric Wires |
| MSF | Multiple Stage Filter |
| MSHA | Mine Safety and Health Administration |
| MSI | Medium Scale Integration |
| MSI | Microelectronics Society Of India |
| MSI | Microsoft System Information |