| Abbreviation | Definition |
|---|---|
| MRP | Multigenre Research Project |
| MRQ | Medical Review Quarterly |
| MRS | Mitsubishi Rotary Separator |
| MRSA | methicillin-resistant Staphylococcus aureus |
| MRSP | Macrolide Resistant Streptococcus Pneumoniae |
| MRSS | Methicillin Resistant Staphylococcus Strains |
| MRT | Mean Response Time |
| MS&T | Manufacturing Science and Technology |
| MS/MS | tandem mass spectrometry |
| MSB | Metabolic Supplement Basic |
| MSCL | Measurement Standards and Calibration Laboratory |
| MSCL | Mississippi State Chemical Laboratory |
| MSDL | Marine Structures Design Laboratory |
| MSDS | Material Safety Data Sheet |
| MSL | Mars Science Laboratory |
| MSL | Michael Smith Laboratories |
| MSL | Microscopy Services Laboratory |
| MSML | Mechanics of Soft Materials Laboratory |
| MSMSL | Multi Scale Modeling and Simulation Laboratory |
| M-Spike | Monoclonal Spike |