| Abbreviation | Definition |
|---|---|
| MRQ | Material ReQuisition |
| MRR | Master Resale Rights |
| MRSU | Mobile Robot for Service Use |
| MRT | Metal Reader Tab |
| MRV | Machine Readable Visa |
| MRV | Modular Relief Valve |
| MS | Main Spring |
| MS | Metal Spiral |
| MS | Mid Side |
| MS | Mild Steel |
| MS | Motor Saw |
| MS | Multi-Speed |
| MSA | Mine Safety Appliance |
| MSCX | Metric Set screw Coupling |
| MS-DOS | MicroSoft Disk Operating System |
| MSDQ | Masimum Storage Delivery Quantity |
| MSDS | Main Sprinkler Detection System |
| MSDS | Manufacturing System Display Stand |
| MSDS | Material Safety Data Sheet |
| MSIE | Microsoft Internet Explorer |