| M.P.D. | Multiple Personality Disorder |
|---|---|
| M.R.C. | Medical Research Council |
| M.R.S. | Melkersson-Rosenthal syndrome |
| M.V.C. | Maximum Voluntary Isometric Contraction |
| M.W.D. | Maximum Walking Distance |
| M.Z. | mantle zone |
| M/E | Myeloid/Erythroid |
| M/F | Male/Female |
| M/T | mitral/ tufted |
| M/V INDEX | mitotic index |