Main Distribution Frame Main Distributing Frame Mating/Demating Facilities mild detonating fuse Manipulator Development Facility Magnetically Damped Furnace Main Defense Forces MDF MONDIALE DISTRIBUTION FILTRES Microcomputer Development Facilities Minimum Detectable Flux Mission Development Facility Macro-Defect-Free Main Distribution Frames Mammalian Development Facility mean dominant frequency Medium Density Fibreboard Menu Definition File Microsoft Data File Mission Data File myocardial depressant factor IATA code for Mooreland Municipal Airp… Macrophage deactivating factor macrophage deactivation factor macrophage derived neutrophil chemotac… macrophage-derived factor Macular Degeneration Foundation Magnetic Direction Finding Main Defense Force Main Distribution Facility Main Distruting Frame