| Abbreviation | Definition |
|---|---|
| MDU | Medical Defence Union |
| MDU | multiple disability unit |
| MEA | cysteamine (not an acronym) |
| MEA | mean electrical axis |
| MEA | mercaptoethylamine |
| MEA | microelectrode array |
| MEA | microwave endometrial ablation |
| MEA | middle ear adenoma |
| MEA | modern equivalent asset |
| MEA | multiple endocrine adenomatosis |
| MEC | Management Education for Clinicians |
| MEC | Management Executive Committee |
| MEC | mechlorethamine |
| MEC | meclofenamate |
| MEC | meconium |
| MEC | median effective concentration |
| MEC | middle ear canal |
| MEC | mouse embryo cell |
| MEC | mucoepidermoid carcinoma |
| MECS | Minor Eye Conditions Service |