| MBI | Maslach Burnout Inventory; maximum blink index |
|---|---|
| MC | mass casualties; mast cell; Master of Surgery [Lat. Magister Chirurgiae]; maximum concentration; Med... |
| MCL | maximum containment laboratory; medial collateral ligament; midclavicular line; midcostal line; mini... |
| MCU | malaria control unit; maximum care unit; micturating cystourethrography; motor cortex unit |
| MDHR | maximum determined heart rate |