What does MDF stand for?

Macrodefect Free - Materials science

Macular Degeneration Foundation (SAUO)

Magnetic Direction Finding - Meteorology

Magyar Demokrata Forum - Hungarian Democratic Forum - Political party (EY)

Main Distributing Frame - Bell System

Main Distribution Frame (NITA)

Maine Development Foundation (EARSL)

Maintenance Data Form (ACAE)

Maintenance Depot Fabrication

Manipulator Deployment Facility (MCD)

Manipulator Development Facility - NASA (NASA)

Manitoba Development Fund (SAUO)

Manpower Data File (SAUO)

Manual Direction Finder - Radio

Manufactura d'Armas de Fuego - NCIC firearms make code (NCIC)

Manufacturer's Designated Fuel - Automotive engineering

Map-Dot-Fingerprint Dystrophy (SAUS)

Marine Construction (UK) Ltd., Southampton, Hampshire, UK - Manufacturer code for watercraft hull identification number (USCG)

Marine Diesel Fuel - Fuels and lubricants

Maritime Defence Force (SAUO)

Market Development Funds - Business term

Master Data File (AFIT)

Master Directory File - Computer science

Master Distribution Frame - Electronics (ECII)

Master Document File - Computer science

Mate/Demate Facility - NASA (NASA)

Mating/Demating Facilities (SAUS)

Mean Dominant Frequency (MAE)

Median Demagnetizing Field - Geophysics

Medium Density Fiberboard - Lumber (WOHB)

Medium-Frequency Direction Finder - or Finding

Menu Definition File (SAUS)

Message Development Framework (GART)

Metals Datafile - Materials Information - Information service or system (IID)

Methlene Diphosphate/Sphonate - Medicine (EDAA)

Metric Data Facility (MCD)

Microcomputer Development Facilities (IEEE)

Micro Defect Free

Micro-Dose-Focusing - Electron microscopy

Midland Doherty Financial Corp. - Toronto Stock Exchange symbol

Midtfly Aps - Denmark - ICAO designator (FAAC)

Midwest Democratic Front (SAUO)

Mild Detonating Fuse

Minimum Detectable Flux

Mission Data File (SAUS)

Mission Degradation Factor (SAUS)

Mixed Dipterocarp Forest

Modify

Moksha - Language code (ETLW)

Monopulse Direction Finding (SAUS)

Mooreland, OK - Location identifier - FAA (FAAL)

Multiband Direction Finder

Multiple Domain Facility - Computer science (GART)

Multiple Domain Feature - Computer science (GART)

Myanmar Defense Forces - Military (HRYB)

Myocardial Depressant Factor