| Abbreviation | Definition |
|---|---|
| LVU | Local Veterinary Unit |
| LWST | Lowest |
| MAABRE | Mid-Continent Association for Agriculture, Biomedical Research and Education |
| MAC | Mycrobaterium Avian Complex |
| MAFF | Massachusetts Ferret Friends |
| MAFF | Ministry of Agriculture, Fisheries, and Food ( UK: obsolete, now DEFRA) |
| MARC | Marine Animal Rescue Coalition |
| MASAAV | Mid-Atlantic States Association of Avian Veterinarians |
| MAU | Egyptian: Cat |
| MAVIS | Marketing Authorisations Veterinary Information Scheme |
| MAVIS | Medicines Act Veterinary Information Service |
| MAVIS | Medicines Act Veterinary Information Service (see Veterinary Medicines Directorate web site) |
| MAVMA | Massachusetts Veterinary Medical Association |
| MAVT | Michigan Association of Veterinary Technicians |
| MAVT | Minnesota Association of Veterinary Technicians |
| MAWR | Marsh Wren |
| MAZHARHUSSAIN | undergraduate, undergrad(noun)a university student who has not yet received a first degree |
| MBC | Migratory Bird Center |
| MBNMS | Monterey Bay National Marine Sanctuary |
| MCA | Medicines Control Agency |