Made on Assembly
Magnetic Optical Activity
Mail Order Association of America (NTPA)
Make on Arrival (NASA)
Management Operations Audit - Navy (NG)
Mancebo Yacht Design, Vallejo, CA - Manufacturer code for watercraft hull identification number (USCG)
Manual-Off-Automatic (KSC)
Marine Office of America (AD)
Marine Officer's Attendant - British military (DMA)
Massachusetts Orthopaedic Association (SAUO)
Matrix Output Amplifier
McDonald's Operators' Association (EA)
Mechanism of Action - Medicine (DAVI)
Medical Opinions Associates, Inc. - Commercial firm
Medical Outreach for Armenians (EA)
Medium Observation Aircraft
Memorandum of Agreement
Memorandum of Assistance
Meteorological, Ozone, and Aerosols - Climatology (CERES)
Method of Accomplishment (AFIT)
Method of Adjustment - Aviation
Methods of Administration - Department of Education (OICC)
Metropolitan Opera Association (AD)
Metropolitan Opera Auditions (AD)
Michigan Optometric Association (SAUO)
Michigan Osteopathic Association (EARSL)
Microlensing Observations in Astrophysics (SAUS)
Microwave Oven Association (BUAC)
Military Assistance Program Order Amendment (AFM)
Military Operations Area - FAA (TAG)
Ministry of Aviation - British
Minnesota Orchestral Association (AD)
Minute of Angle
Misr Overseas Airways - Egypt
Missile Optical Alignment
Missouri Botanical Garden, St. Louis, MO - OCLC symbol (OCLC)
Moa - Cuba - Airport symbol (OAG)
Model A - NCIC car model code
Modern Operating Agreement - Labor negotiations
Molln - Austria - Seismograph station code, US Geological Survey (SEIS)
Monoamine Oxidase (MELL)
Mosin-Nagant - NCIC firearms make code (NCIC)
Mountain Lake Resources, Inc. - Vancouver Stock Exchange symbol
Mount Observer Automation
Municipality of Anchorage (SAUO)
Municipal Officers' Association (ROG)
Music Operators of America - Later, AMOA (EA)
Mwan - Language code (ETLW)
Medium Observation Aircraft (AD)
Minute of Angle (AD)
Missile Optical Alignment (AD)
Mud on Airstrip (AD)
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