| MOD | magnetic optic disk; maturity onset diabetes; Medical Officer of the Day; mesio-occlusodistal |
|---|---|
| MOH | Medical Officer of Health; Ministry of Health |
| MOOW | Medical Officer of the Watch |
| MRO | master reference oscillator; medical review officer; minimal recognizable odor; muscle receptor orga... |
| MTO | Medical Transport Officer; methoxyhydroxyphenylalanine |