| MASS | Medicine, Angioplasty, or Surgery Study |
|---|---|
| MC | mass casualties; mast cell; Master of Surgery [Lat. Magister Chirurgiae]; maximum concentration; Med... |
| MCh | Master of Surgery [Lat. Magister Chirurgiae]; methacholine |
| MChD | Master of Dental Surgery |
| MChir | Master in Surgery [Lat. Magister Chirurgiae] |