| Abbreviation | Definition |
|---|---|
| MS | Mass Spectrometer |
| MS | Master Switch |
| MS | Material Specification |
| MS | Materials Science |
| MS | Mating Sequence |
| MS | Military Standard (Parts Designation) |
| ms | Millisecond |
| MS | Milli-Second |
| MS | Mission Specialist |
| MS | Mission Station |
| MS | Multistring |
| MS/MS | Material Science and Manufacturing in Space |
| MSA | Material Service Area |
| MSA | Minimum Surface Area |
| MSA | Mission Solution Analysis |
| MSA | MSA-1 |
| MSAA | Mars Surface Anomaly Analysis |
| MSAD | Materials Summary Acceptance Document |
| MSAT | Multiflow Schedule Assessment Team |
| MSBLS | Microwave Scan Beam Landing System |