| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
|---|---|
| MAR | main admissions room; marasmus; marrow; maximal aggregation ratio; medication administration record;... |
| MCA | major coronary artery; Maternity Center Association; medical care administration; methylcholanthrene... |
| MGA | master of general administration |
| MSA | major serologic antigen; male-specific antigen; mannitol salt agar; Medical Services Administration;... |