| Abbreviation | Definition |
|---|---|
| MSRL | Mass Spectrometry Resource Laboratory |
| MSRL | Mechanical Systems Research Laboratory |
| MSRL | Mudrock Systems Research Laboratory |
| MSSA | Methicillin-Ausceptible Staphylococcus Aureus |
| MSSL | Mullard Space Science Laboratory |
| MST | Measurement Status Table |
| MST | Multi-mode Storage Tube |
| MSTL | Measurement Science and Technology Laboratory |
| MSTL | Measurements and Spatial Technologies Laboratory |
| MSTL | Mobile Soil Testing Laboratories |
| MSTN | MyoSTatin |
| MSU | Mid Stream Urination |
| MSU | Mid stream urine |
| MSU | Midstream Specimen of Urine |
| MSU | MonoSodium Urate |
| MSU | Myocardial Substrate Uptake |
| MT | Membrane Type |
| MT | Miniature Tube |
| MT | Molecular Testing |
| MTEC | Metabolic Typing Education Center |