| MAR | main admissions room; marasmus; marrow; maximal aggregation ratio; medication administration record;... |
|---|---|
| MAV | mechanical auditory ventricle; minimal alveolar ventilation; minimum apparent viscosity; movement ar... |
| MC | mass casualties; mast cell; Master of Surgery [Lat. Magister Chirurgiae]; maximum concentration; Med... |
| MCGN | mesangiocapillary glomerulonephritis; minimal change glomerulonephritis; mixed cryoglobulinemia with... |
| MCINS | minimal change idiopathic nephrotic syndrome |