| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
|---|---|
| MRT | magnetic resonance tomography; maximum relaxation time; median range score; median reaction time; me... |
| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
| NRM | National Registry of Microbiologists; normal range of motion; nucleus reticularis magnocellularis |
| NROM | normal range of motion |