| Abbreviation | Definition |
|---|---|
| MD | Medical Dissident |
| MD | Medical Divinity |
| MD | Medical Dunce |
| MD | Mentally Defective |
| MD | Merry Devil |
| MD | Messy Diaper |
| MD | Michael's Dream |
| MD | Mirth Defect |
| MD | Mirth Doctor |
| MD | Miserable Doctor |
| MD | Moriwaki Dream |
| MDC | Mentally Decrepit Cretin |
| MDC | Missouri Department of Communism |
| MDG | Mouton De Gruyter |
| MDH | Mahashian Di Hatti |
| MDIYD | My Dime Is Your Dime |
| MDK | Mighty Damn Kool |
| MDL | Marxist Deranged Lunatic |
| MDMA | MaDMAn |
| MDMA | Magically Delicious Mushroom Acid |