| Abbreviation | Definition |
|---|---|
| MSK | Musculo-SKeletal |
| MSL | Male-Specific Lethal |
| MSL | Midsternal Line |
| MSLT | Multiple sleep latency test |
| MSN | Mental Stimulation Nil |
| MSNA | Muscle Sympathetic Nerve Activity |
| MSP | Maximum Spawning Potential |
| MSPI | Milk, Soy, Protein Intolerance |
| MSS | Motion Sickness Susceptibility |
| MSS | Mucus-Stimulating Substance |
| MSS | Multi-Sensory Stimulation |
| MSS | Musculo-Skeletal System |
| MSSA | Methicillin Sensitive Staphylococcus Aureus |
| MSSS | Multiple Sclerosis Severity Score |
| MST | Medial Superior Temporal |
| MST | Median Survival Time |
| MST | Minimum Survival Temperature |
| MST | Multi Systemic Therapy |
| MST | Muscle STrength |
| MSTD | Multiple System Tauopathy with presenile Dementia |