| MECTA | mobile electroconvulsive therapy apparatus |
|---|---|
| MICU | medical intensive care unit; mobile intensive care unit |
| MME | M-mode echocardiography; mobile medical equipment; mouse mammary epithelium |
| MMR | mass miniature radiography; masseter muscle rigidity; maternal mortality rate; measles-mumps-rubella... |
| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |