| Abbreviation | Definition |
|---|---|
| MAS | Manifest anxiety scale |
| MAS | Meconium Aspiration Syndrome |
| MASC | Male Abuse Survivors Centre |
| MASH | Make Arthritis Stop Hurting |
| MASS | Massage |
| MASS | Massive |
| MAST | Medical Anti-Shock Trousers |
| MAT | Maternal |
| MAT | Medication Administration Training |
| MAT | multifocal atrial tachycardia |
| MATE | Mature Age Transition Evaluation |
| MATH | Multidimensional Approach To Healing |
| MAX | Maxilla |
| MAX | Maximal |
| MAX | Maximum |
| MB | Muscle Back |
| MB | Muscle Balance |
| MB | Myocardial B |
| MBA | Mind Body Attitude |
| MBA | Mind, Body, and Attitude |