| MMA | mastitis-metritis-agalactia [syndrome]; medical management analysis; medical materials account; meth... |
|---|---|
| MPKC | management problem-knowledge coupler |
| MSO | management service organization; medial superior olive; medical staff organization |
| OMB | Office of Management and Budget |
| OPM | occult primary malignancy; Office of Personnel Management; ophthalmoplegic migraine |