| Abbreviation | Definition |
|---|---|
| MCPJ | Metacarpophalangeal Joint |
| MCPS | Member of College of Physicians & Surgeons |
| MCPS | Member of College of Physicians and Surgeons |
| MCS | Multiple Chemical Sensitivity |
| MCSE | Must Consult Someone Else |
| MCT | Medium Chain Triglycerides |
| MCU | Micturating Cysto Urethrogram |
| MCV | Mean Cell Volume |
| MCV | Molluscum Contagiosum Virus |
| MD | Macular Degeneration |
| MD | Magnesium Deficiency |
| MD | Malic De-hydrogenase |
| MD | Manic Depressive |
| MD | Mantoux Diameter |
| MD | Medio-Dorsal |
| MD | Mesio-Distal |
| MD | Mitral Disease |
| MD | Monocular Deprivation Ophthalmology |
| MD | Motion-Defined |
| MD | Movement Disorder |