List of acronyms: M: Difference between revisions
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==MJ== |
==MJ== |
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* [[MJD]] - (i) Modified [[Julian Day]] |
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==MK== |
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* [[MK]] - (s) [[Air Mauritius]] ([[IATA]] code) - [[Macedonia]] (ISO 3166 digram) - (i) [[Mortal Kombat]] (game) |
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* [[MKD]] - (s) [[Macedonia]] (ISO 3166 trigram) |
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* [[MKO]] - (i) ''[[Mojahedin-e-Khalq]]'' Organization (Arabic "People's Mujahedin of Iran") |
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* [[MKS]] - (i) [[Metre]]-[[Kilogram]]-[[Second]] system of units |
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* [[MKT (disambiguation)|MKT]] - (i) [[Missouri-Kansas-Texas Railroad]] ([[1865]]-[[1989]]) - [[Mortal Kombat Trilogy]] |
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==ML== |
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* [[ML]] - (s) [[Mali]] (NATO country code; ISO 3166 digram) - (i) [[Maximum Likelihood Estimation|Maximum Likelihood]] |
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* [[MLA]] - (i) Member of Legislative Assembly |
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* [[MLB]] - (i) [[Major League Baseball]] |
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* [[MLE]] - (i) [[Maximum likelihood estimation]] |
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* [[MLI]] - (s) [[Mali]] (ISO 3166 trigram) |
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* [[MLRS]] - (i) Multiple-Launch Rocket System |
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* [[MLS]] - (i) [[Major League Soccer]] - [[Multiple Listing Service]] |
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* [[MLSR]] - (i) Missing, Lost or Stolen Report |
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* [[MLT]] - (s) [[Malta]] (ISO 3166 trigram) |
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* [[MLVW]] - (i) Medium Logistics Vehicle, Wheeled |
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==MM== |
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* [[MM]] - (s) [[Myanmar]] (ISO 3166 digram) |
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* [[MMC]] - (i) Materiel Management Centre |
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* [[MMEV]] - (i) Multi-Mission Effects Vehicle |
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* [[MMO]] - (i) Massively Multiplayer Online (computer game) |
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* [[MMR]] - (s) [[Myanmar]] (ISO 3166 trigram) |
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* [[MMS]] - (i) Multimission Modular Spacecraft |
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* [[MMU]] - (i) Manned Manoeuvring Unit |
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This list contains [[acronym]]s, [[initialism]]s, and [[pseudo-blend]]s that begin with the letter '''M'''. |
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An '''acronym''' is an [[abbreviation]] pronounced as a series of constituent letters; an '''initialism''' is an abbreviation whose pronunciation is wholly or partly the names of constituent letters; and a '''pseudo-blend''' is an abbreviation whose extra or omitted letters means that it cannot be considered a true acronym, initialism, or [[portmanteau]] (a word formed by combining two or more words). |
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:'''(a)''' = acronym in the example: ''SARS - (a) Severe acute respiratory syndrome'' |
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:'''(i)''' = initialism in the example: ''CD - (i) Compact disc'' |
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:'''(p)''' = pseudo-blend in the example: ''UNIFEM - (p) United Nations Development Fund for Women'' |
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:'''(s)''' = symbol (none of the above, stands for and is read as something else; for example: ''MHz - Megahertz'') |
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== Add new entries here == |
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Please add your own, in a quasi-dictionary order with lowercase treated the same as uppercase and ignoring non-alphanumeric characters (hyphens and such). This means that only [[alphanumeric]] characters have any significance in determining order, and that lowercase letters occupy the same ordering position as uppercase (in tie-breaker cases, list lower case first). For example: Algol appears before ALS. (This differs from a strict [[ASCII]] ordering.) |
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{{CompactTOCprefix|prefix=M}} |
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__NOTOC__ |
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==MA== |
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* [[MA]] - (s) [[Madagascar]] (NATO country code) - [[Massachusetts]] (postal symbol) - [[Morocco]] (ISO 3166 digram) |
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* [[MAA]] - (i) [[Mathematical Association of America]] |
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* [[MAC]] - (s) [[Macao]] (ISO 3166 trigram) - (a) U.S. [[Military Airlift Command]] ([[1966]]-[[1992]]) |
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* [[MACA]] - (i) [[Military Aid to the Civil Authorities]] |
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* [[MACHO]] - (p) MAssive Compact Halo Object |
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* [[MAD]] - (a) [[Magnetic Anomaly Detector]] - [[Mutual Assured Destruction]] |
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* [[MADD]] - (a) [[Mothers Against Drunk Driving]] - [[Myoadenylate Deaminase Deficiency]] |
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* [[MAF]] - (i) Maintenance Action Form |
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* [[MAGNETAR]] - (p) [http://www.magnetar.org Metaprogrammable AGent NETwork ARchitecture] |
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* [[MAGTF]] - (i) Marine Air-Ground Task Force |
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* [[MALD]] - (a) Miniature Air-Launched Decoy |
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* [[MANPADS]] - (p) Man-Portable Air Defence System |
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* [[MAO]] - (i) ''Molėtų astronomijos observatorija'' (Moletai Astronomical Observatory) - MonoAmine Oxidase |
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* [[MAQS]] - (a) [[Museum of the American Quilter's Society]] ("max") |
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* [[MAR]] - (s) [[Morocco]] (ISO 3166 trigram) |
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* [[MARFORCC]] - (p) Marine Force Component Commander |
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* [[MAS]] - (i) NATO [[Military Agency for Standardisation]] |
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* [[MASAS]] - (a) [[Monte Agliale Supernovae and Asteroid Survey]] |
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* [[Maser]] - (a) Microwave Amplification by Stimulated Emission of Radiation |
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* [[MASH]] - (a) Mobile Army Surgical Hospital |
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* [[MATS]] - (a) U.S. [[Military Air Transport Service]] ([[1948]]-[[1966]]) |
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* [[MAVS]] - (a/i) Mobile Artillery Vehicle System |
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==MB== |
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* [[MB]] - (s) [[Manitoba]] (postal symbol) |
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* [[MBA]] - (i) Main Battle Area - Masters of Business Administration |
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* [[MBCC]] - (i) [[Migratory Bird Conservation Commission]] (U.S.) |
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* [[MBCS]] - (i) [[Multi-Byte Character Set]] |
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* [[MBE]] - (i) Member of the [[Order of the British Empire]] |
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* [[MBTA]] - (i) [[Massachusetts Bay Transit Authority]] - (i) [[Migratory Bird Treaty Act]] (U.S.) |
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==MC== |
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* [[MC]] - (i) Master of Ceremony - [[Military Cross]] (bravery award) - (s) [[Monaco]] (ISO 3166 digram) |
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* [[MCA]] - (i) [[MultiChannel Analyzer]] |
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* [[MCC]] - (i) Mission Control Centre - Movement Control Centre |
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* [[MCD]] - (i) [[Attention-Deficit Hyperactivity Disorder|Minimal Cerebral Dysfunction]] |
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* [[MC&G]] - (i) Mapping, Charting, and Geodesy |
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* [[MCM]] - (i) Mine Counter-Measures |
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* [[MCO]] - (s) [[Monaco]] (ISO 3166 trigram) - (i) Movement Control Officer |
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* [[MCP]] - (i) Maintenance Collection Point |
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* [[MCT]] - (i) Movement Control Team |
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==MD== |
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* Md - (s) [[Mendelevium]] |
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* [[MD]] - (s) [[Maryland]] (postal symbol) - (i) ''Medicinae Doctor'' (Doctor of Medicine/Medical Doctor) - Mentioned in Dispatches (military) - (s) [[Moldova]] (NATO country code; ISO 3166 digram) |
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* [[MDA]] - (i) Main Defensive Area - (s) [[Moldova]] (ISO 3166 trigram) |
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* [[MDF]] - (i) [[Main Distribution Frame]] - [[Medium-Density Fibreboard]] |
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* [[MDG]] - (s) [[Madagascar]] (ISO 3166 trigram) |
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* [[MDM]] - (i) [[Michigan Dartmouth MIT]] telescope consortium |
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* [[MDMA]] - (i) MethyleneDioxy-MethylAmphetamine (also known as "Ecstasy") |
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* [[MDT]] - (i) Mountain Daylight Saving Time (UTC-6 hours) |
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* [[MDV]] - (s) [[Maldives]] (ISO 3166 trigram) |
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==ME== |
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* Me - (s) [[Messerschmitt]] |
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* [[ME]] - (s) [[Maine]] (postal symbol) - (i) [[Mechanical Engineer]][ing] - [[Medical Examiner]] - [[Middle East]] - (s) [[Middle East Airlines]] (IATA code) - (i) Memory Effect - [[Myalgic Encephalomyelitis]] |
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* [[MEA]] - (i) [[Maine Educational Assessment]] - [[Middle East Airlines]] - [[Millennium Ecosystem Assessment]] - [[Minimum Enroute Altitude]] - Mono-ethanol Amine - [[Multilateral Environmental Agreement]] |
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* [[MEC]] - (s) [[Maine Central Railroad]] (AAR reporting mark) - Manta, Ecuador (IATA location identifier) - (i) [[Model European Council]] - [[Mountain Equipment Co-op]] |
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* [[MECC]] - (a) [[Minnesota Educational Computing Consortium]] (later Corporation, dissolved 1999) |
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* [[MEDEVAC]] - (p) Medical Evacuation |
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* [[MEF]] - (i) U.S. Marine Expeditionary Force - Minimum Essential Facility - Mission Essential Force |
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* [[MEG]] - (i) [[Magnetoencephalography|MagnetoEncephaloGraphy]] |
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* [[MEI]] - (i) [[Matsushita Electric Industrial Co., Ltd.]] |
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* [[MEK]] - (i) [[Magyar Elektronikus Konyvtar]] - [[Message Encryption Key]] - Methyl ethyl ketone - (p) [[Mujahideen al-Khalq]] |
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* [[MEL]] - (i) [[Maya Embedded Language]] - [[Michigan eLibrary|Michigan Electronic Library]] |
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* [[MEM]] - (i) Message Exchange Mechanism |
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* [[MEO]] - (a) Medium Earth Orbit |
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* [[MEP]] - (i) Mechanical Electrical Plumbing - [[Member of the European Parliament]] - ''[[Missions étrangères de Paris]]'' (French for "Paris Foreign Missions") - [[Model European Parliament]] |
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* [[MER]] - (i) [[Mars Exploration Rover]] |
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* [[MES]] - (i) [[Marconi Electronic Systems]] |
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* [[MET]] - (p) Meteorological - (a) [[Middle European Time]] |
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* [[METAR]] - (p) [Meteorological] Aviation Routine weather report |
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* [[METOC]] - (p) Meteorological and Oceanographic |
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* [[METT-T]] - (a/i) Mission, Enemy, Terrain, Troops, and Time available (mnemonic) |
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* [[METT-TC]] - (a/i) Mission, Enemy, Terrain [and weather], Troops [and support], Time [available] and Civilian considerations (mnemonic) |
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* [[MEU]] - (i) U.S. Marine Expeditionary Unit - Maximum Expected Utility |
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* MeV - (s) [[Megaelectron-volt]] |
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* [[MEV]] - (i) [[Musica Elettronica Viva]] |
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* [[MEX]] - (s) [[Mexico]] (ISO 3166 trigram) |
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* [[MEZ]] - (i) Missile Engagement Zone |
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==MF== |
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==MG== |
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* Mg - (s) [[Magnesium]] |
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* [[MG]] - (i) [[Machine gun|Machine Gun]] - (s) [[Madagascar]] (ISO 3166 digram) - [[Mongolia]] (NATO country code) - (i) [[MG (car)|Morris Garage]] |
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* [[MGB]] - (i) Medium Girder Bridge |
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* [[MGM]] - (i) [[Metro Goldwyn Mayer]] - (s) [[Montgomery, AL]] (Airport Code) |
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==MH== |
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* [[MH]] - (s) [[Marshall Islands]] (postal symbol; ISO 3166 digram) |
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* [[MHL]] - (s) [[Marshall Islands]] (ISO 3166 trigram) |
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* [[MHz]] - (s) [[MegaHertz]] |
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==MI== |
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* [[MI]] - (s) [[Malawi]] (NATO country code) - [[Michigan]] (postal symbol) - [[Midway Islands]] (ISO 3166 digram; obsolete [[1986]]) - (i) Military Intelligence |
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* [[MIA]] - (i) Missing In Action |
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* [[MIB]] - (i) [[Men In Black]] - [[Mint condition|Mint]] In Box (Internet auction/trading listings) |
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* [[MICOM]] - (p) Missile Command |
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* [[MICV]] - (i) Mechanised Infantry Combat Vehicle |
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* [[MID]] - (s) [[Midway Islands]] (ISO 3166 trigram; obsolete [[1986]]) |
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* [[MIDS]] - (i) Multi-Function Information Distribution System |
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* [[MIFG]] - (s) Shallow Fog (METAR Code) |
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* [[MILF]] - (a) [[Moro Islamic Liberation Front]] - [http://wiktionary.org/enwiki/w/wiki.phtml?title=Transwiki:Mother_I%27d_Like_To_Fuck Mother I'd Like To Fuck] |
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* [[MILSATCOM]] - (p) Military Satellite Communications |
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* [[MILSTRIP]] - (p) Military Standart Requisitioning and Issue Procedure |
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* [[MIMAROPA]] - (p) [[Mindoro]], [[Marinduque]], [[Romblon]], [[Palawan]] (a region in the [[Philippines]]) |
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* [[MIMOSA]] - (a) MIcroMeasurements Of Satellite Acceleration |
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* [[MIP]] - (a) Multilateral Interoperability Programme - Multiple Identity Poster |
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* [[MIRV]] - (a) Multiple Independent Reentry Vehicle |
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* [[MIS]] - (a) [[Management Information Systems]] - Museum Information System |
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* [[MISSI]] - (a) Multilevel Information System Security Initiative |
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* [[MIT]] - (i) [[Massachusetts Institute of Technology]] - [[methylisothiazoline]] - ''Milli Istihbarad Teskilati'' (Intelligence service of [[Turkey (country)|Turkey]]) |
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* [[MITS]] - ''see entry'' |
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==MJ== |
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* [[MJD]] - (i) Modified [[Julian Day]] |
* [[MJD]] - (i) Modified [[Julian Day]] |
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* [[MNP]] - (s) [[Northern Mariana Islands]] (ISO 3166 trigram) |
* [[MNP]] - (s) [[Northern Mariana Islands]] (ISO 3166 trigram) |
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* [[MNT]] - (p) Molecular [[nanotechnology]] |
* [[MNT]] - (p) Molecular [[nanotechnology]] |
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==MO== |
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* Mo - (s) [[Molybdenum]] |
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* [[MO]] - (s) [[Macao]] (ISO 3166 digram) - [[Missouri]] (postal symbol) - (i) [[modus operandi]] (Latin, "mode of operation") - (s) [[Morocco]] (NATO country code) |
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* [[MOAB]] - (a) Massive Ordnance Air Blast (official) - Mother Of All Bombs (slang) |
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* [[MOC]] - (i) Mission Operations Centre |
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* [[MoD]] - (i) [[Ministry of Defence (United Kingdom)]] |
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* [[ModSAF]] - (p) Modular Semi-Automated Forces (military simulation) |
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* [[Moe]] - (a) Marvel of entertainment |
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* [[MOE]] - (i) Measure Of Effectiveness |
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* [[MOF]] - (a/i) [[Ministry of Finance (Japan)|Ministry of Finance]] |
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* [[MOFA]] - (a/i) [[Ministry of Foreign Affairs (Japan)|Ministry of Foreign Affairs]] |
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* [[MOM]] - (a) [[Management Object Model]] ([[HLA]]) |
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* [[MoMA]] - (a) [[Museum of Modern Art]] |
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* [[MOOTW]] - (p) Military Operations Other Than War ("moot-double-you") |
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* [[MOP]] - (i) Measure Of Performance |
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* [[MOPE]] - (a) Most Oppressed People Ever (politics) |
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* [[MOPP]] - (i) Mission-Oriented Protective Posture |
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* [[MORP]] - (a) [[Meteorite Observation and Recovery Project]] |
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* [[MOS]] - (i) Military Occupational Specialty - (a) [http://www.filmsound.org/terminology/mos.htm Mit Out Sound / Motor Only Sync] - (i) Mobile Object System - Model Output Statistics - Multiplayer Online Services |
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* [[MOSFET]] - (a) [[Metal-Oxide-Semiconductor Field-Effect Transistor]] |
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* [[MOSS]] - (p) MObile Submarine Simulator - (a) Moving Object Support System |
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* [[MOTESS]] - (a) [[Moving Object and Transient Event Search System]] |
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* [[MOUT]] - (i) Military Operations in Urban[ized] Terrain |
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* [[MOW]] - (i) [[Maintenance of way]] (also MW) |
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* [[MOZ]] - (s) [[Mozambique]] (ISO 3166 trigram) |
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==MP== |
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* [[MP]] - (i) [[Magic Points]] - (s) [[Mauritius]] (NATO country code) - (i) [[Member of Parliament]] - [[Military Police]] - [[Missouri Pacific]] - (s) [[Northern Mariana Islands]] (postal symbol; ISO 3166 digram) |
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* [[MPA]] - (i) Maritime Patrol Aircraft - Master of Public Administration |
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* [[MPEG]] - (a) Motion Pictures (Coding) Experts Group |
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* [[MPEV]] - (i) Multi-Purpose Engineering Vehicle |
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* [[MPFC]] - (i) Medial PreFrontal Cortex |
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* [[MPMC]] - (i) Medial PreMotor Cortex |
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==MQ== |
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* [[MQ]] - (s) [[Martinique]] (ISO 3166 digram) |
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==MR== |
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* [[MR]] - (s) [[Mauritania]] (NATO country code; ISO 3166 digram) |
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* [[MRBM]] - (i) Medium Range Ballistic Missile |
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* [[MRC]] - (i) Maintenance Requirements Card |
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* [[MRE]] - (i) Meal Ready to Eat (U.S. military rations) |
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* [[MRI]] - (i) [[Magnetic Resonance Imaging]] |
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* [[MRL]] - (i) Multiple Rocket Launcher |
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* [[MRR]] - (i) Minimum-Risk Route - [[Maximum Rock and Roll]] - [[My Restaurant Rules]] |
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* [[MRT]] - (s) [[Mauritania]] (ISO 3166 trigram) |
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==MS== |
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* [[MS]] - (i) ''mano sinistra'' (Latin, "left hand") - (p) manuscript - (i) [[Master of Science]] - (p) [[Microsoft]] (sometimes M$) - (s) [[Mississippi]] (postal symbol) - [[Montserrat]] (ISO 3166 digram) - (i) [[Multiple Sclerosis]] |
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* [[M&S]] - (i) Modelling & Simulation |
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* [[MSB]] - (i) Main Support Battalion |
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* [[MSD]] - (i) Minimum Safe Distance |
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* [[MSDB]] - (i) Multi Source Data Base |
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* [[MSE]] - (i) Multiple Subscriber Element |
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* [[MSEC]] - (p) Message Security Encryption Code ("emm-sec") |
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* [[MSG]] - (i) [[Monosodium glutamate|MonoSodium Glutamate]] |
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* [[MSI]] - (p) [[Multispectral imagery]] |
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* [[MSIE]] - (i) [[Microsoft]] [[Internet Explorer]] |
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* [[MSL]] - (p) [[Missile]] |
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* [[MSO]] - (i) [[Multiple System Operator]] |
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* [[MSR]] - (i) Main Supply Route - Module Service Record - (s) [[Montserrat]] (ISO 3166 trigram) |
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* [[MST]] - (i) [[Madison Symmetric Torus]] - [[Mountain Standard Time Zone|Mountain Standard Time]] (UTC-7 hours) |
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* [[MST3K]] or MST3k - (i) [[Mystery Science Theater 3000]] |
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==MT== |
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* Mt - (s) [[Meitnerium]] |
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* [[MT]] - (s) [[Malta]] (NATO country code; ISO 3166 digram) - [[Montana]] (postal symbol) |
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* [[MTF]] - (i) Medical Treatment Facility |
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* [[MTOE]] - (p) Modified Table of Organization and Equipment ("emm-toe") |
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* [[MTQ]] - (s) [[Martinique]] (ISO 3166 trigram) |
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* [[MTR]] - (i) Main and Tail Rotor (helicopter type) |
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* [[MTS]] - (i) Michigan Terminal/Timesharing System - [[Multichannel Television Sound]] - [[Multi-Technical Services]] |
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* [[MTU]] - (i) ''Tankovei Mostoukladchik'' (Russian Танковый Мостоукладчик, "Tank Bridge-Layer") [http://www.milparade.com/Soderzhaniye.pdf †] |
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* [[MTV]] - (i) ''MainosTeleVisio'' (Finnish commercial TV company) - Music TeleVision |
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* [[MTVL]] - (i) Mobile Tracked Vehicle, Light |
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==MU== |
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* [[MU]] - (s) [[Mauritius]] (ISO 3166 digram) - [[Oman]] (NATO country code; from ''Muscat'') |
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* [[MUS]] - (s) [[Mauritius]] (ISO 3166 trigram) |
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==MV== |
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* [[MV]] - (s) [[Maldives]] (NATO country code; ISO 3166 digram) - (i) Motor Vehicle |
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==MW== |
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* [[MW]] - (i) [[Maintenance of way]] (also MOW) - (s) [[Malawi]] (ISO 3166 digram) |
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* [[MWI]] - (s) [[Malawi]] (ISO 3166 trigram) |
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* [[MWR]] - (i) Morale, Welfare, and Recreation |
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==MX== |
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* [[MX]] - (s) [[Mexico]] (NATO country code; ISO 3166 digram) |
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* [[MX]] - (a) [[Mail Exchange]] |
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==MY== |
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* [[MY]] - (s) [[Malaysia]] (NATO country code; ISO 3166 digram) |
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* [[MYOB]] - (i) Mind Your Own Business |
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* [[MYS]] - (s) [[Malaysia]] (ISO 3166 trigram) |
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* [[MYT]] - (s) [[Mayotte]] (ISO 3166 trigram) |
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==MZ== |
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* [[MZ]] - (i) Mach-Zehnder (interferometer) - (s) Magnetic Azimuth - (i) Move, Zig (Zero Wing) - (s) Mozambique (NATO country code; ISO 3166 digram) |
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==See also== |
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* [[List of acronyms and initialisms]] |
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[[Category:Lists of abbreviations]] |
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[[Category:Acronyms|M]] |
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==MO== |
==MO== |
Revision as of 15:50, 6 July 2005
This list contains acronyms, initialisms, and pseudo-blends that begin with the letter M.
An acronym is an abbreviation pronounced as a series of constituent letters; an initialism is an abbreviation whose pronunciation is wholly or partly the names of constituent letters; and a pseudo-blend is an abbreviation whose extra or omitted letters means that it cannot be considered a true acronym, initialism, or portmanteau (a word formed by combining two or more words).
- (a) = acronym in the example: SARS - (a) Severe acute respiratory syndrome
- (i) = initialism in the example: CD - (i) Compact disc
- (p) = pseudo-blend in the example: UNIFEM - (p) United Nations Development Fund for Women
- (s) = symbol (none of the above, stands for and is read as something else; for example: MHz - Megahertz)
Add new entries here
Please add your own, in a quasi-dictionary order with lowercase treated the same as uppercase and ignoring non-alphanumeric characters (hyphens and such). This means that only alphanumeric characters have any significance in determining order, and that lowercase letters occupy the same ordering position as uppercase (in tie-breaker cases, list lower case first). For example: Algol appears before ALS. (This differs from a strict ASCII ordering.)
MA
- MA - (s) Madagascar (NATO country code) - Massachusetts (postal symbol) - Morocco (ISO 3166 digram)
- MAA - (i) Mathematical Association of America
- MAC - (s) Macao (ISO 3166 trigram) - (a) U.S. Military Airlift Command (1966-1992)
- MACA - (i) Military Aid to the Civil Authorities
- MACHO - (p) MAssive Compact Halo Object
- MAD - (a) Magnetic Anomaly Detector - Mutual Assured Destruction
- MADD - (a) Mothers Against Drunk Driving - Myoadenylate Deaminase Deficiency
- MAF - (i) Maintenance Action Form
- MAGNETAR - (p) Metaprogrammable AGent NETwork ARchitecture
- MAGTF - (i) Marine Air-Ground Task Force
- MALD - (a) Miniature Air-Launched Decoy
- MANPADS - (p) Man-Portable Air Defence System
- MAO - (i) Molėtų astronomijos observatorija (Moletai Astronomical Observatory) - MonoAmine Oxidase
- MAQS - (a) Museum of the American Quilter's Society ("max")
- MAR - (s) Morocco (ISO 3166 trigram)
- MARFORCC - (p) Marine Force Component Commander
- MAS - (i) NATO Military Agency for Standardisation
- MASAS - (a) Monte Agliale Supernovae and Asteroid Survey
- Maser - (a) Microwave Amplification by Stimulated Emission of Radiation
- MASH - (a) Mobile Army Surgical Hospital
- MATS - (a) U.S. Military Air Transport Service (1948-1966)
- MAVS - (a/i) Mobile Artillery Vehicle System
MB
- MB - (s) Manitoba (postal symbol)
- MBA - (i) Main Battle Area - Masters of Business Administration
- MBCC - (i) Migratory Bird Conservation Commission (U.S.)
- MBCS - (i) Multi-Byte Character Set
- MBE - (i) Member of the Order of the British Empire
- MBTA - (i) Massachusetts Bay Transit Authority - (i) Migratory Bird Treaty Act (U.S.)
MC
- MC - (i) Master of Ceremony - Military Cross (bravery award) - (s) Monaco (ISO 3166 digram)
- MCA - (i) MultiChannel Analyzer
- MCC - (i) Mission Control Centre - Movement Control Centre
- MCD - (i) Minimal Cerebral Dysfunction
- MC&G - (i) Mapping, Charting, and Geodesy
- MCM - (i) Mine Counter-Measures
- MCO - (s) Monaco (ISO 3166 trigram) - (i) Movement Control Officer
- MCP - (i) Maintenance Collection Point
- MCT - (i) Movement Control Team
MD
- Md - (s) Mendelevium
- MD - (s) Maryland (postal symbol) - (i) Medicinae Doctor (Doctor of Medicine/Medical Doctor) - Mentioned in Dispatches (military) - (s) Moldova (NATO country code; ISO 3166 digram)
- MDA - (i) Main Defensive Area - (s) Moldova (ISO 3166 trigram)
- MDF - (i) Main Distribution Frame - Medium-Density Fibreboard
- MDG - (s) Madagascar (ISO 3166 trigram)
- MDM - (i) Michigan Dartmouth MIT telescope consortium
- MDMA - (i) MethyleneDioxy-MethylAmphetamine (also known as "Ecstasy")
- MDT - (i) Mountain Daylight Saving Time (UTC-6 hours)
- MDV - (s) Maldives (ISO 3166 trigram)
ME
- Me - (s) Messerschmitt
- ME - (s) Maine (postal symbol) - (i) Mechanical Engineer[ing] - Medical Examiner - Middle East - (s) Middle East Airlines (IATA code) - (i) Memory Effect - Myalgic Encephalomyelitis
- MEA - (i) Maine Educational Assessment - Middle East Airlines - Millennium Ecosystem Assessment - Minimum Enroute Altitude - Mono-ethanol Amine - Multilateral Environmental Agreement
- MEC - (s) Maine Central Railroad (AAR reporting mark) - Manta, Ecuador (IATA location identifier) - (i) Model European Council - Mountain Equipment Co-op
- MECC - (a) Minnesota Educational Computing Consortium (later Corporation, dissolved 1999)
- MEDEVAC - (p) Medical Evacuation
- MEF - (i) U.S. Marine Expeditionary Force - Minimum Essential Facility - Mission Essential Force
- MEG - (i) MagnetoEncephaloGraphy
- MEI - (i) Matsushita Electric Industrial Co., Ltd.
- MEK - (i) Magyar Elektronikus Konyvtar - Message Encryption Key - Methyl ethyl ketone - (p) Mujahideen al-Khalq
- MEL - (i) Maya Embedded Language - Michigan Electronic Library
- MEM - (i) Message Exchange Mechanism
- MEO - (a) Medium Earth Orbit
- MEP - (i) Mechanical Electrical Plumbing - Member of the European Parliament - Missions étrangères de Paris (French for "Paris Foreign Missions") - Model European Parliament
- MER - (i) Mars Exploration Rover
- MES - (i) Marconi Electronic Systems
- MET - (p) Meteorological - (a) Middle European Time
- METAR - (p) [Meteorological] Aviation Routine weather report
- METOC - (p) Meteorological and Oceanographic
- METT-T - (a/i) Mission, Enemy, Terrain, Troops, and Time available (mnemonic)
- METT-TC - (a/i) Mission, Enemy, Terrain [and weather], Troops [and support], Time [available] and Civilian considerations (mnemonic)
- MEU - (i) U.S. Marine Expeditionary Unit - Maximum Expected Utility
- MeV - (s) Megaelectron-volt
- MEV - (i) Musica Elettronica Viva
- MEX - (s) Mexico (ISO 3166 trigram)
- MEZ - (i) Missile Engagement Zone
MF
MG
- Mg - (s) Magnesium
- MG - (i) Machine Gun - (s) Madagascar (ISO 3166 digram) - Mongolia (NATO country code) - (i) Morris Garage
- MGB - (i) Medium Girder Bridge
- MGM - (i) Metro Goldwyn Mayer - (s) Montgomery, AL (Airport Code)
MH
- MH - (s) Marshall Islands (postal symbol; ISO 3166 digram)
- MHL - (s) Marshall Islands (ISO 3166 trigram)
- MHz - (s) MegaHertz
MI
- MI - (s) Malawi (NATO country code) - Michigan (postal symbol) - Midway Islands (ISO 3166 digram; obsolete 1986) - (i) Military Intelligence
- MIA - (i) Missing In Action
- MIB - (i) Men In Black - Mint In Box (Internet auction/trading listings)
- MICOM - (p) Missile Command
- MICV - (i) Mechanised Infantry Combat Vehicle
- MID - (s) Midway Islands (ISO 3166 trigram; obsolete 1986)
- MIDS - (i) Multi-Function Information Distribution System
- MIFG - (s) Shallow Fog (METAR Code)
- MILF - (a) Moro Islamic Liberation Front - Mother I'd Like To Fuck
- MILSATCOM - (p) Military Satellite Communications
- MILSTRIP - (p) Military Standart Requisitioning and Issue Procedure
- MIMAROPA - (p) Mindoro, Marinduque, Romblon, Palawan (a region in the Philippines)
- MIMOSA - (a) MIcroMeasurements Of Satellite Acceleration
- MIP - (a) Multilateral Interoperability Programme - Multiple Identity Poster
- MIRV - (a) Multiple Independent Reentry Vehicle
- MIS - (a) Management Information Systems - Museum Information System
- MISSI - (a) Multilevel Information System Security Initiative
- MIT - (i) Massachusetts Institute of Technology - methylisothiazoline - Milli Istihbarad Teskilati (Intelligence service of Turkey)
- MITS - see entry
MJ
- MJD - (i) Modified Julian Day
MK
- MK - (s) Air Mauritius (IATA code) - Macedonia (ISO 3166 digram) - (i) Mortal Kombat (game)
- MKD - (s) Macedonia (ISO 3166 trigram)
- MKO - (i) Mojahedin-e-Khalq Organization (Arabic "People's Mujahedin of Iran")
- MKS - (i) Metre-Kilogram-Second system of units
- MKT - (i) Missouri-Kansas-Texas Railroad (1865-1989) - Mortal Kombat Trilogy
ML
- ML - (s) Mali (NATO country code; ISO 3166 digram) - (i) Maximum Likelihood
- MLA - (i) Member of Legislative Assembly
- MLB - (i) Major League Baseball
- MLE - (i) Maximum likelihood estimation
- MLI - (s) Mali (ISO 3166 trigram)
- MLRS - (i) Multiple-Launch Rocket System
- MLS - (i) Major League Soccer - Multiple Listing Service
- MLSR - (i) Missing, Lost or Stolen Report
- MLT - (s) Malta (ISO 3166 trigram)
- MLVW - (i) Medium Logistics Vehicle, Wheeled
MM
- MM - (s) Myanmar (ISO 3166 digram)
- MMC - (i) Materiel Management Centre
- MMEV - (i) Multi-Mission Effects Vehicle
- MMO - (i) Massively Multiplayer Online (computer game)
- MMR - (s) Myanmar (ISO 3166 trigram)
- MMS - (i) Multimission Modular Spacecraft
- MMU - (i) Manned Manoeuvring Unit
This list contains acronyms, initialisms, and pseudo-blends that begin with the letter M.
An acronym is an abbreviation pronounced as a series of constituent letters; an initialism is an abbreviation whose pronunciation is wholly or partly the names of constituent letters; and a pseudo-blend is an abbreviation whose extra or omitted letters means that it cannot be considered a true acronym, initialism, or portmanteau (a word formed by combining two or more words).
- (a) = acronym in the example: SARS - (a) Severe acute respiratory syndrome
- (i) = initialism in the example: CD - (i) Compact disc
- (p) = pseudo-blend in the example: UNIFEM - (p) United Nations Development Fund for Women
- (s) = symbol (none of the above, stands for and is read as something else; for example: MHz - Megahertz)
Add new entries here
Please add your own, in a quasi-dictionary order with lowercase treated the same as uppercase and ignoring non-alphanumeric characters (hyphens and such). This means that only alphanumeric characters have any significance in determining order, and that lowercase letters occupy the same ordering position as uppercase (in tie-breaker cases, list lower case first). For example: Algol appears before ALS. (This differs from a strict ASCII ordering.)
MA
- MA - (s) Madagascar (NATO country code) - Massachusetts (postal symbol) - Morocco (ISO 3166 digram)
- MAA - (i) Mathematical Association of America
- MAC - (s) Macao (ISO 3166 trigram) - (a) U.S. Military Airlift Command (1966-1992)
- MACA - (i) Military Aid to the Civil Authorities
- MACHO - (p) MAssive Compact Halo Object
- MAD - (a) Magnetic Anomaly Detector - Mutual Assured Destruction
- MADD - (a) Mothers Against Drunk Driving - Myoadenylate Deaminase Deficiency
- MAF - (i) Maintenance Action Form
- MAGNETAR - (p) Metaprogrammable AGent NETwork ARchitecture
- MAGTF - (i) Marine Air-Ground Task Force
- MALD - (a) Miniature Air-Launched Decoy
- MANPADS - (p) Man-Portable Air Defence System
- MAO - (i) Molėtų astronomijos observatorija (Moletai Astronomical Observatory) - MonoAmine Oxidase
- MAQS - (a) Museum of the American Quilter's Society ("max")
- MAR - (s) Morocco (ISO 3166 trigram)
- MARFORCC - (p) Marine Force Component Commander
- MAS - (i) NATO Military Agency for Standardisation
- MASAS - (a) Monte Agliale Supernovae and Asteroid Survey
- Maser - (a) Microwave Amplification by Stimulated Emission of Radiation
- MASH - (a) Mobile Army Surgical Hospital
- MATS - (a) U.S. Military Air Transport Service (1948-1966)
- MAVS - (a/i) Mobile Artillery Vehicle System
MB
- MB - (s) Manitoba (postal symbol)
- MBA - (i) Main Battle Area - Masters of Business Administration
- MBCC - (i) Migratory Bird Conservation Commission (U.S.)
- MBCS - (i) Multi-Byte Character Set
- MBE - (i) Member of the Order of the British Empire
- MBTA - (i) Massachusetts Bay Transit Authority - (i) Migratory Bird Treaty Act (U.S.)
MC
- MC - (i) Master of Ceremony - Military Cross (bravery award) - (s) Monaco (ISO 3166 digram)
- MCA - (i) MultiChannel Analyzer
- MCC - (i) Mission Control Centre - Movement Control Centre
- MCD - (i) Minimal Cerebral Dysfunction
- MC&G - (i) Mapping, Charting, and Geodesy
- MCM - (i) Mine Counter-Measures
- MCO - (s) Monaco (ISO 3166 trigram) - (i) Movement Control Officer
- MCP - (i) Maintenance Collection Point
- MCT - (i) Movement Control Team
MD
- Md - (s) Mendelevium
- MD - (s) Maryland (postal symbol) - (i) Medicinae Doctor (Doctor of Medicine/Medical Doctor) - Mentioned in Dispatches (military) - (s) Moldova (NATO country code; ISO 3166 digram)
- MDA - (i) Main Defensive Area - (s) Moldova (ISO 3166 trigram)
- MDF - (i) Main Distribution Frame - Medium-Density Fibreboard
- MDG - (s) Madagascar (ISO 3166 trigram)
- MDM - (i) Michigan Dartmouth MIT telescope consortium
- MDMA - (i) MethyleneDioxy-MethylAmphetamine (also known as "Ecstasy")
- MDT - (i) Mountain Daylight Saving Time (UTC-6 hours)
- MDV - (s) Maldives (ISO 3166 trigram)
ME
- Me - (s) Messerschmitt
- ME - (s) Maine (postal symbol) - (i) Mechanical Engineer[ing] - Medical Examiner - Middle East - (s) Middle East Airlines (IATA code) - (i) Memory Effect - Myalgic Encephalomyelitis
- MEA - (i) Maine Educational Assessment - Middle East Airlines - Millennium Ecosystem Assessment - Minimum Enroute Altitude - Mono-ethanol Amine - Multilateral Environmental Agreement
- MEC - (s) Maine Central Railroad (AAR reporting mark) - Manta, Ecuador (IATA location identifier) - (i) Model European Council - Mountain Equipment Co-op
- MECC - (a) Minnesota Educational Computing Consortium (later Corporation, dissolved 1999)
- MEDEVAC - (p) Medical Evacuation
- MEF - (i) U.S. Marine Expeditionary Force - Minimum Essential Facility - Mission Essential Force
- MEG - (i) MagnetoEncephaloGraphy
- MEI - (i) Matsushita Electric Industrial Co., Ltd.
- MEK - (i) Magyar Elektronikus Konyvtar - Message Encryption Key - Methyl ethyl ketone - (p) Mujahideen al-Khalq
- MEL - (i) Maya Embedded Language - Michigan Electronic Library
- MEM - (i) Message Exchange Mechanism
- MEO - (a) Medium Earth Orbit
- MEP - (i) Mechanical Electrical Plumbing - Member of the European Parliament - Missions étrangères de Paris (French for "Paris Foreign Missions") - Model European Parliament
- MER - (i) Mars Exploration Rover
- MES - (i) Marconi Electronic Systems
- MET - (p) Meteorological - (a) Middle European Time
- METAR - (p) [Meteorological] Aviation Routine weather report
- METOC - (p) Meteorological and Oceanographic
- METT-T - (a/i) Mission, Enemy, Terrain, Troops, and Time available (mnemonic)
- METT-TC - (a/i) Mission, Enemy, Terrain [and weather], Troops [and support], Time [available] and Civilian considerations (mnemonic)
- MEU - (i) U.S. Marine Expeditionary Unit - Maximum Expected Utility
- MeV - (s) Megaelectron-volt
- MEV - (i) Musica Elettronica Viva
- MEX - (s) Mexico (ISO 3166 trigram)
- MEZ - (i) Missile Engagement Zone
MF
MG
- Mg - (s) Magnesium
- MG - (i) Machine Gun - (s) Madagascar (ISO 3166 digram) - Mongolia (NATO country code) - (i) Morris Garage
- MGB - (i) Medium Girder Bridge
- MGM - (i) Metro Goldwyn Mayer - (s) Montgomery, AL (Airport Code)
MH
- MH - (s) Marshall Islands (postal symbol; ISO 3166 digram)
- MHL - (s) Marshall Islands (ISO 3166 trigram)
- MHz - (s) MegaHertz
MI
- MI - (s) Malawi (NATO country code) - Michigan (postal symbol) - Midway Islands (ISO 3166 digram; obsolete 1986) - (i) Military Intelligence
- MIA - (i) Missing In Action
- MIB - (i) Men In Black - Mint In Box (Internet auction/trading listings)
- MICOM - (p) Missile Command
- MICV - (i) Mechanised Infantry Combat Vehicle
- MID - (s) Midway Islands (ISO 3166 trigram; obsolete 1986)
- MIDS - (i) Multi-Function Information Distribution System
- MIFG - (s) Shallow Fog (METAR Code)
- MILF - (a) Moro Islamic Liberation Front - Mother I'd Like To Fuck
- MILSATCOM - (p) Military Satellite Communications
- MILSTRIP - (p) Military Standart Requisitioning and Issue Procedure
- MIMAROPA - (p) Mindoro, Marinduque, Romblon, Palawan (a region in the Philippines)
- MIMOSA - (a) MIcroMeasurements Of Satellite Acceleration
- MIP - (a) Multilateral Interoperability Programme - Multiple Identity Poster
- MIRV - (a) Multiple Independent Reentry Vehicle
- MIS - (a) Management Information Systems - Museum Information System
- MISSI - (a) Multilevel Information System Security Initiative
- MIT - (i) Massachusetts Institute of Technology - methylisothiazoline - Milli Istihbarad Teskilati (Intelligence service of Turkey)
- MITS - see entry
MJ
- MJD - (i) Modified Julian Day
MK
- MK - (s) Air Mauritius (IATA code) - Macedonia (ISO 3166 digram) - (i) Mortal Kombat (game)
- MKD - (s) Macedonia (ISO 3166 trigram)
- MKO - (i) Mojahedin-e-Khalq Organization (Arabic "People's Mujahedin of Iran")
- MKS - (i) Metre-Kilogram-Second system of units
- MKT - (i) Missouri-Kansas-Texas Railroad (1865-1989) - Mortal Kombat Trilogy
ML
- ML - (s) Mali (NATO country code; ISO 3166 digram) - (i) Maximum Likelihood
- MLA - (i) Member of Legislative Assembly
- MLB - (i) Major League Baseball
- MLE - (i) Maximum likelihood estimation
- MLI - (s) Mali (ISO 3166 trigram)
- MLRS - (i) Multiple-Launch Rocket System
- MLS - (i) Major League Soccer - Multiple Listing Service
- MLSR - (i) Missing, Lost or Stolen Report
- MLT - (s) Malta (ISO 3166 trigram)
- MLVW - (i) Medium Logistics Vehicle, Wheeled
MM
- MM - (s) Myanmar (ISO 3166 digram)
- MMC - (i) Materiel Management Centre
- MMEV - (i) Multi-Mission Effects Vehicle
- MMO - (i) Massively Multiplayer Online (computer game)
- MMR - (s) Myanmar (ISO 3166 trigram)
- MMS - (i) Multimission Modular Spacecraft
- MMU - (i) Manned Manoeuvring Unit
MN
- Mn - (s) Manganese
- MN - (s) Minnesota (postal symbol) - Monaco (NATO country code) - Mongolia (ISO 3166 digram)
- MNB - (p) Multinational Brigade
- MNB C - (p) Multinational Brigade Centre (KFOR)
- MND - (i) Motor Neurone Disease - (p) Multinational Division
- MNG - (s) Mongolia (ISO 3166 trigram)
- MNP - (s) Northern Mariana Islands (ISO 3166 trigram)
- MNT - (p) Molecular nanotechnology
MO
- Mo - (s) Molybdenum
- MO - (s) Macao (ISO 3166 digram) - Missouri (postal symbol) - (i) modus operandi (Latin, "mode of operation") - (s) Morocco (NATO country code)
- MOAB - (a) Massive Ordnance Air Blast (official) - Mother Of All Bombs (slang)
- MOC - (i) Mission Operations Centre
- MoD - (i) Ministry of Defence (United Kingdom)
- ModSAF - (p) Modular Semi-Automated Forces (military simulation)
- Moe - (a) Marvel of entertainment
- MOE - (i) Measure Of Effectiveness
- MOF - (a/i) Ministry of Finance
- MOFA - (a/i) Ministry of Foreign Affairs
- MOM - (a) Management Object Model (HLA)
- MoMA - (a) Museum of Modern Art
- MOOTW - (p) Military Operations Other Than War ("moot-double-you")
- MOP - (i) Measure Of Performance
- MOPE - (a) Most Oppressed People Ever (politics)
- MOPP - (i) Mission-Oriented Protective Posture
- MORP - (a) Meteorite Observation and Recovery Project
- MOS - (i) Military Occupational Specialty - (a) Mit Out Sound / Motor Only Sync - (i) Mobile Object System - Model Output Statistics - Multiplayer Online Services
- MOSFET - (a) Metal-Oxide-Semiconductor Field-Effect Transistor
- MOSS - (p) MObile Submarine Simulator - (a) Moving Object Support System
- MOTESS - (a) Moving Object and Transient Event Search System
- MOUT - (i) Military Operations in Urban[ized] Terrain
- MOW - (i) Maintenance of way (also MW)
- MOZ - (s) Mozambique (ISO 3166 trigram)
MP
- MP - (i) Magic Points - (s) Mauritius (NATO country code) - (i) Member of Parliament - Military Police - Missouri Pacific - (s) Northern Mariana Islands (postal symbol; ISO 3166 digram)
- MPA - (i) Maritime Patrol Aircraft - Master of Public Administration
- MPEG - (a) Motion Pictures (Coding) Experts Group
- MPEV - (i) Multi-Purpose Engineering Vehicle
- MPFC - (i) Medial PreFrontal Cortex
- MPMC - (i) Medial PreMotor Cortex
MQ
- MQ - (s) Martinique (ISO 3166 digram)
MR
- MR - (s) Mauritania (NATO country code; ISO 3166 digram)
- MRBM - (i) Medium Range Ballistic Missile
- MRC - (i) Maintenance Requirements Card
- MRE - (i) Meal Ready to Eat (U.S. military rations)
- MRI - (i) Magnetic Resonance Imaging
- MRL - (i) Multiple Rocket Launcher
- MRR - (i) Minimum-Risk Route - Maximum Rock and Roll - My Restaurant Rules
- MRT - (s) Mauritania (ISO 3166 trigram)
MS
- MS - (i) mano sinistra (Latin, "left hand") - (p) manuscript - (i) Master of Science - (p) Microsoft (sometimes M$) - (s) Mississippi (postal symbol) - Montserrat (ISO 3166 digram) - (i) Multiple Sclerosis
- M&S - (i) Modelling & Simulation
- MSB - (i) Main Support Battalion
- MSD - (i) Minimum Safe Distance
- MSDB - (i) Multi Source Data Base
- MSE - (i) Multiple Subscriber Element
- MSEC - (p) Message Security Encryption Code ("emm-sec")
- MSG - (i) MonoSodium Glutamate
- MSI - (p) Multispectral imagery
- MSIE - (i) Microsoft Internet Explorer
- MSL - (p) Missile
- MSO - (i) Multiple System Operator
- MSR - (i) Main Supply Route - Module Service Record - (s) Montserrat (ISO 3166 trigram)
- MST - (i) Madison Symmetric Torus - Mountain Standard Time (UTC-7 hours)
- MST3K or MST3k - (i) Mystery Science Theater 3000
MT
- Mt - (s) Meitnerium
- MT - (s) Malta (NATO country code; ISO 3166 digram) - Montana (postal symbol)
- MTF - (i) Medical Treatment Facility
- MTOE - (p) Modified Table of Organization and Equipment ("emm-toe")
- MTQ - (s) Martinique (ISO 3166 trigram)
- MTR - (i) Main and Tail Rotor (helicopter type)
- MTS - (i) Michigan Terminal/Timesharing System - Multichannel Television Sound - Multi-Technical Services
- MTU - (i) Tankovei Mostoukladchik (Russian Танковый Мостоукладчик, "Tank Bridge-Layer") †
- MTV - (i) MainosTeleVisio (Finnish commercial TV company) - Music TeleVision
- MTVL - (i) Mobile Tracked Vehicle, Light
MU
- MU - (s) Mauritius (ISO 3166 digram) - Oman (NATO country code; from Muscat)
- MUS - (s) Mauritius (ISO 3166 trigram)
MV
MW
- MW - (i) Maintenance of way (also MOW) - (s) Malawi (ISO 3166 digram)
- MWI - (s) Malawi (ISO 3166 trigram)
- MWR - (i) Morale, Welfare, and Recreation
MX
- MX - (s) Mexico (NATO country code; ISO 3166 digram)
- MX - (a) Mail Exchange
MY
- MY - (s) Malaysia (NATO country code; ISO 3166 digram)
- MYOB - (i) Mind Your Own Business
- MYS - (s) Malaysia (ISO 3166 trigram)
- MYT - (s) Mayotte (ISO 3166 trigram)
MZ
- MZ - (i) Mach-Zehnder (interferometer) - (s) Magnetic Azimuth - (i) Move, Zig (Zero Wing) - (s) Mozambique (NATO country code; ISO 3166 digram)
See also
MO
- Mo - (s) Molybdenum
- MO - (s) Macao (ISO 3166 digram) - Missouri (postal symbol) - (i) modus operandi (Latin, "mode of operation") - (s) Morocco (NATO country code)
- MOAB - (a) Massive Ordnance Air Blast (official) - Mother Of All Bombs (slang)
- MOC - (i) Mission Operations Centre
- MoD - (i) Ministry of Defence (United Kingdom)
- ModSAF - (p) Modular Semi-Automated Forces (military simulation)
- Moe - (a) Marvel of entertainment
- MOE - (i) Measure Of Effectiveness
- MOF - (a/i) Ministry of Finance
- MOFA - (a/i) Ministry of Foreign Affairs
- MOM - (a) Management Object Model (HLA)
- MoMA - (a) Museum of Modern Art
- MOOTW - (p) Military Operations Other Than War ("moot-double-you")
- MOP - (i) Measure Of Performance
- MOPE - (a) Most Oppressed People Ever (politics)
- MOPP - (i) Mission-Oriented Protective Posture
- MORP - (a) Meteorite Observation and Recovery Project
- MOS - (i) Military Occupational Specialty - (a) Mit Out Sound / Motor Only Sync - (i) Mobile Object System - Model Output Statistics - Multiplayer Online Services
- MOSFET - (a) Metal-Oxide-Semiconductor Field-Effect Transistor
- MOSS - (p) MObile Submarine Simulator - (a) Moving Object Support System
- MOTESS - (a) Moving Object and Transient Event Search System
- MOUT - (i) Military Operations in Urban[ized] Terrain
- MOW - (i) Maintenance of way (also MW)
- MOZ - (s) Mozambique (ISO 3166 trigram)
MP
- MP - (i) Magic Points - (s) Mauritius (NATO country code) - (i) Member of Parliament - Military Police - Missouri Pacific - (s) Northern Mariana Islands (postal symbol; ISO 3166 digram)
- MPA - (i) Maritime Patrol Aircraft - Master of Public Administration
- MPEG - (a) Motion Pictures (Coding) Experts Group
- MPEV - (i) Multi-Purpose Engineering Vehicle
- MPFC - (i) Medial PreFrontal Cortex
- MPMC - (i) Medial PreMotor Cortex
MQ
- MQ - (s) Martinique (ISO 3166 digram)
MR
- MR - (s) Mauritania (NATO country code; ISO 3166 digram)
- MRBM - (i) Medium Range Ballistic Missile
- MRC - (i) Maintenance Requirements Card
- MRE - (i) Meal Ready to Eat (U.S. military rations)
- MRI - (i) Magnetic Resonance Imaging
- MRL - (i) Multiple Rocket Launcher
- MRR - (i) Minimum-Risk Route - Maximum Rock and Roll - My Restaurant Rules
- MRT - (s) Mauritania (ISO 3166 trigram)
MS
- MS - (i) mano sinistra (Latin, "left hand") - (p) manuscript - (i) Master of Science - (p) Microsoft (sometimes M$) - (s) Mississippi (postal symbol) - Montserrat (ISO 3166 digram) - (i) Multiple Sclerosis
- M&S - (i) Modelling & Simulation
- MSB - (i) Main Support Battalion
- MSD - (i) Minimum Safe Distance
- MSDB - (i) Multi Source Data Base
- MSE - (i) Multiple Subscriber Element
- MSEC - (p) Message Security Encryption Code ("emm-sec")
- MSG - (i) MonoSodium Glutamate
- MSI - (p) Multispectral imagery
- MSIE - (i) Microsoft Internet Explorer
- MSL - (p) Missile
- MSO - (i) Multiple System Operator
- MSR - (i) Main Supply Route - Module Service Record - (s) Montserrat (ISO 3166 trigram)
- MST - (i) Madison Symmetric Torus - Mountain Standard Time (UTC-7 hours)
- MST3K or MST3k - (i) Mystery Science Theater 3000
MT
- Mt - (s) Meitnerium
- MT - (s) Malta (NATO country code; ISO 3166 digram) - Montana (postal symbol)
- MTF - (i) Medical Treatment Facility
- MTOE - (p) Modified Table of Organization and Equipment ("emm-toe")
- MTQ - (s) Martinique (ISO 3166 trigram)
- MTR - (i) Main and Tail Rotor (helicopter type)
- MTS - (i) Michigan Terminal/Timesharing System - Multichannel Television Sound - Multi-Technical Services
- MTU - (i) Tankovei Mostoukladchik (Russian Танковый Мостоукладчик, "Tank Bridge-Layer") †
- MTV - (i) MainosTeleVisio (Finnish commercial TV company) - Music TeleVision
- MTVL - (i) Mobile Tracked Vehicle, Light
MU
- MU - (s) Mauritius (ISO 3166 digram) - Oman (NATO country code; from Muscat)
- MUS - (s) Mauritius (ISO 3166 trigram)
MV
MW
- MW - (i) Maintenance of way (also MOW) - (s) Malawi (ISO 3166 digram)
- MWI - (s) Malawi (ISO 3166 trigram)
- MWR - (i) Morale, Welfare, and Recreation
MX
- MX - (s) Mexico (NATO country code; ISO 3166 digram)
- MX - (a) Mail Exchange
MY
- MY - (s) Malaysia (NATO country code; ISO 3166 digram)
- MYOB - (i) Mind Your Own Business
- MYS - (s) Malaysia (ISO 3166 trigram)
- MYT - (s) Mayotte (ISO 3166 trigram)
MZ
- MZ - (i) Mach-Zehnder (interferometer) - (s) Magnetic Azimuth - (i) Move, Zig (Zero Wing) - (s) Mozambique (NATO country code; ISO 3166 digram)