| MAFD | manic affective disorder |
|---|---|
| MD | Doctor of Medicine [Lat. Medicinae Doctor]; magnesium deficiency; main duct; maintenance dose; major... |
| MDD | major depressive disorder; mean daily dose |
| MPD | main pancreatic duct; maximum permissible dose; mean population doubling; membrane potential differe... |
| MTD | maximum tolerated dose; mean total dose; metastatic trophoblastic disease; Midwife Teacher's Diploma... |