| M-A tube | Miller Abbott tube |
|---|---|
| 3-M [syndrome] | initials for Miller, McKusick, and Malvaux, who first described the syndrome |
| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
| MD | Doctor of Medicine [Lat. Medicinae Doctor]; magnesium deficiency; main duct; maintenance dose; major... |
| MDCR | Miller-Dieker [syndrome] chromosome region |