| Abbreviation | Definition |
|---|---|
| MR | Magnetic Resonance |
| MR | Magneto-Resistance |
| MR | Microwave Radiometer |
| MRC | Microelectronics Research Center |
| MRC | Mixed Refrigerant Cycle |
| MRC | Model Rectifier Corporation |
| MRCF | Microsoft Real-Time Compression Format |
| MRCI | Model Reference Current Injection |
| MRCP | Microelectronics Research Collaboration Program |
| MRD | Magnetic Resonance Device |
| MRI | Magnetic Resonance Imagery |
| MRR | Multi-Rate Ratio |
| MRS | Materials Research Society |
| MRU | Maximum Receive Unit |
| MRV | Mornitoring, Reporting and Verification |
| MS | Multiple Surface |
| MS | Multi-Spectral |
| MSA | Measurement System Analysis |
| MSA | Microscopy Society of America |
| MSA | Multichannel Signal Analyzer |