| MASH | mobile Army surgical hospital; multiple automated sample harvester |
|---|---|
| MASK | Medical Anatomy Segmentation Kit |
| MASS | Medicine, Angioplasty, or Surgery Study |
| mass | massage |
| massc | mass concentration |
| MAST | Michigan Alcohol Screening test |
| MAST | military antishock trousers; Michigan Alcohol Screening Test |
| mast | mastectomy; mastoid |
| MASU | mobile Army surgical unit |
| MAT | Multifocal Atrial Tachycardia |