(Main list of acronyms) m – (s) Metre – Milli M – (s) Mega- – One thousand (in Roman numerals) MA mA – (s) Milliampere Ma – (s) Megaannum MA (s) Madagascar (FIPS 10-4 country code) (i) Marijuana Anonymous (i) Master of Arts Massachusetts (postal symbol) Megaampere Morocco (ISO 3166 digram) MAA – (i) Mathematical Association of America MAAC – (a) Metro Atlantic Athletic Conference MAC (s) Macau (ISO 3166 trigram) (a) U.S. Military Airlift Command (1966–1992) Mid-American Conference MACA – (i) Military Aid to the Civil Authorities MACE – (a) Multi-Agent Computing Environment MACHO – (p) MAssive Compact Halo Object MAD (a) Magnetic Anomaly Detector (s) Moroccan dirham (ISO 4217 currency code) (a) Mutual Assured Destruction MADD (a) Mothers Against Drunk Driving MyoAdenylate Deaminase Deficiency (p) Multiply–Add MAF – (i) Maintenance Action Form MAFF - (a) Ministry of Agriculture, Forestry and Fisheries (various countries) MAGIC – (a) Major Atmospheric Gamma-ray Imaging Cherenkov (telescope) MAGNETAR – (p) Metaprogrammable AGent NETwork ARchitecture MAGTF – (i) Marine Air-Ground Task Force mah – (s) Marshallese language (ISO 639-2 code) Mahasz – (p) Magyar Hanglemezkiadók Szövetsége (Hungarian, "Association of Hungarian Record Companies") mal – (s) Malayalam language (ISO 639-2 code) MALD – (a) Miniature Air-Launched Decoy MANPADS – (p) MAN-Portable Air Defence System MANPRINT – (p) MANpower and PeRsonnel INTegration MAO (i/a) Molėtų astronomijos observatorija (Moletai Astronomical Observatory) (p) MonoAmine Oxidase MAOI – (p) Monoamine oxidase inhibitor MAP – (a) Management Action Plan (Corporate phrase) MAPP - (a) Medical Assistance Premium Program MAPS – (a) Monitoring Avian Productivity and Survivorship MAQS – (a) Museum of the American Quilter's Society ("max") mar – (s) Marathi language (ISO 639-2 code) MAR – (s) Morocco (ISO 3166 trigram) MarBEF – (p) Marine Biodiversity and Ecosystem Functioning MARC (a) MAchine Readable Cataloging (often also defined as MAchine Readable Code) Mailing list ARChive Maryland Area Regional Commuter train service Massachusetts Animal Rights Coalition Mid-America Regional Council MARCENT – (p) United States Marine Forces Central Command MARFORCC – (p) Marine Force Component Commander MARRS – (a) Martyn Young, Alex Ayuli, Rudy Tambala, Russell Smith, and Steve Young (British electronic music act) MAS – (i) NATO Military Agency for Standardization MASAS – (a) Monte Agliale Supernovae and Asteroid Survey Maser – (a) Microwave Amplification by Stimulated Emission of Radiation MASH – (a) Mobile Army Surgical Hospital MASINT – (p) Measurement And Signature Intelligence MATREX – (p) Modeling Architecture for Technology, Research