| MD | Doctor of Medicine [Lat. Medicinae Doctor]; magnesium deficiency; main duct; maintenance dose; major... |
|---|---|
| MDTR | mean diameter-thickness ratio |
| MED | median erythrocyte diameter; medical, medication, medicine; Medical Entities Dictionary; minimum eff... |
| MMAD | mass median aerodynamic diameter |
| MMD | mass median diameter; minimum morbidostatic dose; moyamoya disease; myotonic muscular dystrophy |