| MLD50 | median lethal dose |
|---|---|
| MLT | left mentotransverse [fetal position] [Lat. mento-laeva transversa]; mean latency time; median letha... |
| MMAD | mass median aerodynamic diameter |
| MMD | mass median diameter; minimum morbidostatic dose; moyamoya disease; myotonic muscular dystrophy |
| MoM | multiples of the median |