• Source: List of acronyms: M

This list contains acronyms, initialisms, and pseudo-blends that begin with the letter M.
For the purposes of this list:

acronym = an abbreviation pronounced as if it were a word, e.g., SARS = severe acute respiratory syndrome, pronounced to rhyme with cars
initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc, pronounced cee dee
pseudo-blend = an abbreviation whose extra or omitted letters mean that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).
(a) = acronym, e.g.: SARS – (a) severe acute respiratory syndrome
(i) = initialism, e.g.: CD – (i) compact disc
(p) = pseudo-blend, e.g.: UNIFEM – (p) United Nations Development Fund for Women
(s) = symbol (none of the above, representing and pronounced as something else; for example: MHz – megahertz)
Some terms are spoken as either acronym or initialism, e.g., VoIP, pronounced both as voyp and V-O-I-P.
(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 & EXperimentation
MATS – (a) U.S. Military Air Transport Service (1948–1966)
MAVS – (a/i) Mobile Artillery Vehicle System
MAW – (s) Malawi (IOC trigram, but not FIFA or ISO 3166)
MAX – (i) Meta-reasoning Architecture for "X"




MB


MB
(s) Manitoba (postal symbol)
Martinique (FIPS 10-4 territory code)
Medal of Bravery (Canada)
MBA
(i) Main Battle Area
Main Belt Asteroid
Master of Business Administration
MBI – (i) Moody Bible Institute
MBBL – (i) (U.S. Armor Center) Mounted Battlespace Battle Laboratory
MBCC – (i) Migratory Bird Conservation Commission (U.S.)
MBCS – (i) Multi-Byte Character Set
MBE
(p) Member of the Order of the British Empire
(i) Multistate Bar Examination (U.S.)
MBIDST – (i) Member of the British Institute of Dental and Surgical Technologists
MBM – (i) Meat and Bone Meal
MBR - (i) Master boot record
MbS – (i) Mohammad bin Salman (current crown prince of Saudi Arabia)
MBSE – (i) Model-based systems engineering
mbsf – metres below sea floor, a depth convention used in paleontology and oceanography
MBT – (i) Main Battle Tank
MBTA – (i) Massachusetts Bay Transportation Authority – Migratory Bird Treaty Act (U.S.)
MBTI – (i) Myers-Briggs Type Indicator




MC


mC – (s) Millicoulomb
MC
(s) Macau (FIPS 10-4 territory code)
(i) Master of Ceremonies
(s) Megacoulomb
(i) Military Cross (bravery award)
(s) Monaco (ISO 3166 digram)
(i) Mortar Carrier
(s) Eleven Hundred (in Roman numerals)
MCA
(i) Master of Computer Applications
Micro Channel Architecture
MultiChannel Analyzer
Music Corporation of America, the original name of the now-defunct MCA Inc.
(i) Malaysian Chinese Association
MCC
(i) Marylebone Cricket Club
Mission Control Center
Motor Control Center
Movement Control Centre
MCD
(i) Minimal Cerebral Dysfunction
Minor civil division (U.S. Census term)
MCDL – (i) Model Composition Definition Language
MCFT – (i) Modified Compression Field Theory
MCG – (i) Melbourne Cricket Ground
MC&G – (i) Mapping, Charting, and Geodesy
MCI – (i) Microwave Communications, Inc.
MCIS – (i) Mellon Collie and the Infinite Sadness
MCM – (i) Mine Counter-Measures
MCMV – (i) Mine Counter-Measure Vessel
MCNC
(i) Microelectronics Center of North Carolina
(i) Mixing Condensation Nucleus Counter
MCO
(i) Major Combat Operation
(s) Monaco (ISO 3166 trigram)
(s) Orlando International Airport (IATA code)
(i) Movement Control Officer
MCP
(i) Maintenance Collection Point
Male Chauvinist Pig
MCR – (i) My Chemical Romance
MCSF – (i) Marine Corps Security Forces
MCT – (i) Movement Control Team
MCTIS – (i) Mounted Co-operative Target Identification System
MCU
(i) Marine Corps University
Marvel Cinematic Universe
Medium close-up (camera direction in British TV scripts)
(p) Microcontroller unit
(i) Milk clotting units
Ming Chuan University
Minimum coded unit (digital imaging)
Multipoint control unit
Municipal Credit Union (New York)
MCWS – (i) Men's College World Series, the final phase of the NCAA Division I baseball tournament in the US




MD


Md – (s) Mendelevium
MD
(s) Fifteen Hundred (in Roman numerals)
Maryland (postal symbol)
(i) Medicinae Doctor (Doctor of Medicine/Medical Doctor)
Mentioned in Dispatches (military)
(s) Moldova (FIPS 10-4 country code; ISO 3166 digram)
MDA
(i) Main Defensive Action/Area
(s) Moldova (ISO 3166 trigram)
(i) Muscular Dystrophy Association
MDF
(i) Main distribution frame
Medium-density fiberboard
MDG
(s) Madagascar (ISO 3166 trigram)
(i) UN Millennium Development Goal
MDL – (s) Moldovan leu (ISO 4217 currency code)
MDM
(i) Michigan Dartmouth MIT telescope consortium
Master data management
MDMA – (i) MethyleneDioxy-MethylAmphetamine (also known as "Ecstasy")
MDNA – (p) Madonna's 12th studio album title (2012)
MDO – (i) Membership Driven Organisation
MDP – (i) Markov Decision Process
MDT – (i) Mountain Daylight Time (UTC−6 hours)
MDS
MDV – (s) Maldives (ISO 3166 trigram)
MDW
(s) Chicago Midway International Airport in Chicago (IATA airport code)
(i) Military District of Washington
(s) Minnesota, Dakota and Western Railway (AAR reporting mark)
(i) Mother’s Day Weekend




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 en route altitude
Mono-ethanol Amine
Multilateral Environmental Agreement
MEAC – (a) Mid-Eastern Athletic Conference (ME-ac)
MEC
(s) Maine Central Railroad
Manta, Ecuador (IATA location identifier)
(i) Model European Council
Mountain East Conference
Mountain Equipment Co-op
MECC – (a) Minnesota Educational Computing Consortium (later Corporation, dissolved 1999)
MECCA – (a) Milwaukee Exposition Convention Center and Arena, a former name for the sports venue now known as UW–Milwaukee Panther Arena
MECO – (a) Main engine cutoff (NASA code for point in Space Shuttle ascent when three main engines are shut down prior to External Tank (ET) separation)
MEDEVAC – (p) Medical evacuation
MEDLI
(a) Mars Science Laboratory Entry, Descent, and Landing Instrumentation
(a) Medical & Scientific Libraries of Long Island
(a) Model for Effluent Disposal using Land Irrigation
MEDS – (a) Mission Essential Data Set
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
(a) methyl ethyl ketone
(p) Mujahideen al-Khalq
MEL
(i) Maya Embedded Language
Michigan Electronic Library
MELT – (a) Metallic Line/Loop Test (ing)
MEM
(i) Message Exchange Mechanism
(p) Microelectromechanical
MEMS – (p) Microelectromechanical System
MENA – (i/a) Middle East and North Africa ("MEE-na" or "MEH-na")
MEO
(a) Medium Earth orbit
Most efficient organization
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
MERL – (i) Mitsubishi Electric Research Laboratories
MES
(i) Marconi Electronic Systems
Medium Edison screw
MESSENGER – (p) MErcury Surface, Space ENvironment, GEochemistry and Ranging
MET
(p) Meteorological
(a) Middle European Time
METAR – (p) [Meteorological] Aviation Routine weather report
METL – (i/a) Mission Essential Task List ("mettle")
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) Megaelectronvolt
MEV
(i) Medical Evacuation Vehicle
Musica Elettronica Viva
MEX – (s) Mexico (ISO 3166 trigram)
MEZ – (i) Missile Engagement Zone
MES – (a) Manufacturing Execution Systems




MF


mF – (s) Millifarad
MF
(s) Mayotte (FIPS 10-4 territory code)
Megafarad
(a) Motherf***er (profanity)
MFG - (s) Manufacturing
MFSB – (i) Mother, Father, Sister, Brother (1970s Philadelphia studio musicians collective)
MFT
(i) Managed file transfer
Master File Table
Mean field theory
Media Foundation Transform
Micro Four Thirds (camera design standard)




MG


mg – (s) Malagasy language (ISO 639-1 code) – Milligram
Mg – (s) Magnesium – Megagram
MG – (i) Machine Gun – (s) Madagascar (ISO 3166 digram) – (s) Major General – (s) Mongolia (FIPS 10-4 country code) – (i) Morris Garage
MGA – (s) Malagasy ariary (ISO 4217 currency code)
MGB – (i) Medium Girder Bridge, Motor Gun Boat
MGM – (i) Metro Goldwyn Mayer – (s) Montgomery, Alabama (Airport Code)
MGPAM – My Gym Partner's a Monkey
MGS – (i) Mobile Gun System




MH


mh – (s) Marshallese language (ISO 639-1 code)
mH – (s) Millihenry
MH
(s) Marshall Islands (postal symbol; ISO 3166 digram)
Megahenry
Montserrat (FIPS 10-4 territory code)
(s) Malaysia Airlines (IATA code)
MHC – (i) Major Histocompatibility Complex
MHEV – Micro-Hybrid Electric Vehicle
MHHW – (i) Mean Higher High Water (nautical charts)
MHL – (s) Marshall Islands (ISO 3166 trigram)
MHLW – (i) Mean Higher Low Water (nautical charts)
MHRA – (i) (UK) Medicines and Healthcare products Regulatory Agency
MHW – (i) Mean High Water (nautical charts)
MHWN – (i) Mean High Water Neaps (nautical charts)
MHWS – (i) Mean High Water Springs (nautical charts)
MHz – (s) Megahertz




MI


mi – (s) Māori language (ISO 639-1 code)
Mi – (s) Mebi
MI
(s) Malawi (FIPS 10-4 country code)
Michigan (postal symbol)
Midway Islands (ISO 3166 digram; obsolete 1986)
(i) Military Intelligence
MIA
(i) Missing In Action
Miami International Airport (IATA code)
MIAA
(i) Maryland Interscholastic Athletic Association
Massachusetts Interscholastic Athletic Association
Michigan Intercollegiate Athletic Association
Mid-America Intercollegiate Athletics Association
MIB
(i) Men In Black
Mint In Box (Internet auction/trading listings)
MIC
(i) Military Industrial Complex
(i) Malaysian Indian Congress
MICE – (a) Meetings, Incentives, Conferences, Exhibitions tourism
MICLIC – (p) Mine Clearing Line Charge
MICOM – (p) Missile Command
MICV – (i) Mechanised Infantry Combat Vehicle
MID – (s) Midway Islands (ISO 3166 trigram; obsolete 1986)
MIDI – (a) Musical Instrument Digital Interface
MIDAS – (a) Man-machine Integration Design and Analysis System
MIDS – (i) Multi-Function Information Distribution System
MIFC – (a) Military Industrial Financial Complex
MIFG – (s) Shallow Fog (METAR Code)
MIFPC – (a) Military Industrial Financial Pharmaceutical Complex
MIKE – (a) Monitoring of Illegal Killing of Elephants
MIL – (i) Man-In-the-Loop
MIL-AASPEM – (i) Man-In-the-Loop AASPEM
MILAN – (p) Missile d´infanterie léger antichar (French, "Anti-Tank Light Infantry Missile")
MiLB – (p) Minor League Baseball
MILC – (a) Mirrorless interchangeable-lens camera
MILES – (a) Multiple Integrated Laser Engagement System (live combat simulation)
MILF
(i) Moro Islamic Liberation Front
(a) Mother I'd Like to F**k
MILSATCOM – (p) Military Satellite Communications
MILSET – (a) Mouvement International pour le Loisir Scientifique Et Technique (French, "International Movement for Leisure Activities in Science and Technology")
MILSTRIP – (p) Military Standard Requisitioning and Issue Procedure DLMSO MILSTRIP Manual
Mimaropa – (p) Mindoro, Marinduque, Romblon, Palawan (a region in the Philippines)
MIMOSA – (a) MIcroMeasurements Of Satellite Acceleration
MIMPT – (i) Member of the Institute of Maxillofacial Prosthetists and Technologists
MIP
(a) Multilateral Interoperability Programme
Multiple Identity Poster
MIPC – (a) Military Industrial Pharmaceutical Complex
MIRA – (a) MILAN Infra-Red Acquisition (thermal sight)
MIRV – (a) Multiple Independent Reentry Vehicle
MIS
(a) Management Information Systems
Museum Information System
MISREP – (p) Mission Report
MISSI – (a) Multilevel Information System Security Initiative
MIT
(i) Massachusetts Institute of Technology
methylisothiazoline
Milli Istihbarad Teskilati (Intelligence service of Turkey)
MITL – (i) Man-In-The-Loop
MITS – see entry




MJ


mJ – (s) Millijoule
MJ
(s) Megajoule
(i) Michael Jordan
(i) Michael Jackson
(i) Mary Jane Watson (Spider-Man character)
MJD – (i) Modified Julian Day
MJF – (i) Maxwell Jacob Friedman, American professional wrestler (who currently performs as "MJF")
MJP – (i) Military Judgement Panel




MK


mk – (s) Macedonian language (ISO 639-1 code)
mK – (s) Millikelvin
Mk - (s) Mark (US weapon designation), as in Mk 18 MOD 0 CQBR
MK
(s) Air Mauritius (IATA code)
Macedonia (ISO 3166 digram; FIPS 10-4 country code)
(i) Mandalskameratene (Norwegian football club)
(s) Megakelvin
(i) Milton Keynes
Missionary Kids
Mortal Kombat (1992 video game)
Mortal Kombat (2011 video game)
mkd – (s) Macedonian language (ISO 639-2 code)
MKD
(s) Macedonian denar (ISO 4217 currency code)
North Macedonia (ISO 3166 trigram)
MKG – (i) Michael Kidd-Gilchrist (American basketball player)
MKO – (i) Mojahedin-e-Khalq Organization (Persian, "People's Mujahedin of Iran")
MKS
(i) Metre–Kilogram–Second (system of units)
(p) MKS Inc. software company
MKSA – (i) Metre–Kilogram–Second–Ampere (system of units)
MKT
(i) Missouri-Kansas-Texas Railroad (1865–1989)
Mortal Kombat Trilogy
Short form of Marketing




ML


ml – (s) Malayalam language (ISO 639-1 code)
mL – (s) Millilitre
ML
(s) Mali (FIPS 10-4 country code; ISO 3166 digram)
(i) Maximum Likelihood
(s) Megalitre
MLA
(i) Martial Law Administration of Bangladesh
Master of Landscape Architecture
Medical Library Association
Member of Legislative Assembly
Modern Language Association
Mutual legal assistance treaty
Myelosis Leucemica Acuta
MLB
(i) Major League Baseball
(s) Melbourne Orlando International Airport (IATA code)
MLC – (i) Member of the Legislative Council (in India)
MLE – (i) Maximum likelihood estimation
mlg – (s) Malagasy language (ISO 639-2 code)
MLG
(i) Major League Gaming
(i) Main Landing Gear
MLHW – (i) Mean Lower High Water (nautical charts)
MLI – (s) Mali (ISO 3166 trigram)
MLK – (i) Martin Luther King Jr.
MLL – (i) Major League Lacrosse
MLLW – (i) Mean Lower Low Water (nautical charts)
MLP – My Little Pony
MLR
(i) Medical Loss Ratio
MLRS – (i) Multiple-Launch Rocket System
MLS
(i) Major League Soccer
Multiple Listing Service
Multilevel security
MLSE
(i) Maple Leaf Sports & Entertainment (owner of several Toronto-based sports teams)
Maximum likelihood sequence estimation
MLSR – (i) Missing, Lost or Stolen Report
mlt – (s) Maltese language (ISO 639-2 code)
MLT – (s) Malta (ISO 3166 trigram)
MLVW – (i) Medium Logistics Vehicle, Wheeled
MLW
(i) Major League Wrestling (American professional wrestling promotion)
Mean Low Water (nautical charts)
MLWN – (i) Mean Low Water Neaps (nautical charts)
MLWS – (i) Mean Low Water Springs (nautical charts)




MM


mm – (s) Millimetre
Mm – (s) Megametre
MM – (i) Military Medal – (s) Myanmar (ISO 3166 digram) – Two Thousand (in Roman numerals)
MMA – (i) Mixed martial arts – Moving Mechanical Assembly
MMC – (p) Machinist's Mate, Chief (USN rating) – (i) Materiel Management Centre
MMCM – (p) Machinist's Mate, Master Chief (USN rating) – (i) Magnetic Mine Counter Measure
MMCS – (p) Machinist's Mate, Senior Chief (USN rating)
MMEV – (i) Multi-Mission Effects Vehicle
MMI – (i) Man-Machine Interface
MMI – (i) McLean Meditation Institute
MMIC – (i) Mindfulness & Meditation Instructor, Certified
MMIC – (i) McLean Meditation Institute Certified
MMI – (i) Magical MonkeyZ Inc.
MMIO – (i) Memory-mapped I/O
MMK – (s) Burmese kyat (ISO 4217 currency code)
MMO – (i) Massively Multiplayer Online (computer game)
MMOR – (i) Master of Management in Operations Research
MMORPG – (i) Massively multiplayer online role-playing game
MMPR – Mighty Morphin Power Rangers
MMR – (i) Measles, Mumps and Rubella vaccine – (s) Myanmar (ISO 3166 trigram)
MMS – (i) Multimission Modular Spacecraft
MMU – (i) Manchester Metropolitan University – (i) Manned Manoeuvring Unit
MMW – (p) Millimetre Wave (radar, from "mm Wave")




MN


mn – (s) Mongolian language (ISO 639-1 code)
mN – (s) Millinewton
Mn – (s) Manganese
MN – (s) Meganewton – Minnesota (postal symbol) – Monaco (FIPS 10-4 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
MNE – (s) Montenegro (ISO 3166 trigram)
MNG – (i) Multiple-image Network Graphics – (s) Mongolia (ISO 3166 trigram)
MNMF – (i) Multi-National Maritime Force
MNP – (s) Northern Mariana Islands (ISO 3166 trigram)
MNS – (i) Mission Needs Statement
MNT – (p) Molecular nanotechnology – (s) Mongolian tugrik (ISO 4217 currency code)




MO


mo – (s) Moldovan language (ISO 639-1 code)
Mo – (s) Molybdenum
MO – (s) Macau (ISO 3166 digram) – (i) Medical Officer – (s) Missouri (postal symbol) – (i) modus operandi (Latin, "mode of operation") – (s) Morocco (FIPS 10-4 country code) [mutual oral]
MOA – Museum of Art (Brigham Young University)
MOAB – (a) Massive Ordnance Air Blast (official) – Mother Of All Bombs (slang)
MOB – (i) Man Over Board – Marching Owl Band – Movable Object Block
MOC – (i) Macedonian Orthodox Church – Measure Of Capability – Mission Operations Centre – My Own Creation (Lego)
MOCAS – (a) Mechanization Of Contract Administration Services
MoD – (i) Ministry of Defence (United Kingdom) and various other countries
MOD – (i) Magneto-optical disc – Masters of Deception – Minimum Object Distance – Multiple Organ Dysfunction
MoDAF – (p) Ministry of Defence Architecture Framework ("moh-daff")
modem – (p) Modulator-Demodulator
ModSAF – (p) Modular Semi-Automated Forces (military simulation)
Moe – (a) Marvel of entertainment
MOE – (i) Measure Of Effectiveness
MOF – (a/i) Ministry of Finance (Japan)
MOFA – (a/i) Ministry of Foreign Affairs (Japan)
MOH – (a/i) Medal of Honor – Music On Hold
MOID – (i) Minimum Orbital Intersection Distance
MOJWA – (i) Movement for Oneness and Jihad in West Africa
mol – (s) Moldovan language (ISO 639-2 code) – mole (unit)
MOLO – (a) Mobile Other Licensed Operator (UK)
MoM – (a) Multiple of the median
MOM – (a) Message-oriented middleware
MOM – (a) Master's Degree in Oriental medicine
MoMA – (a) Museum of Modern Art (NYC)
mon – (s) Mongolian language (ISO 639-2 code)
MOND – (p) Modified Newtonian Dynamics
MOO – (i) Measure Of Outcome
MOOTW – (p) Military Operations Other Than War ("moot-double-you")
MOP – (s) Macau pataca (ISO 4217 currency code) – (i) Measure Of Performance
MOPE – (a) Ministry of Population and Environment (Nepal) – Most Oppressed People Ever (politics)
MOPP – (i/a) Mission-Oriented Protective Posture
MORP – (a) Meteorite Observation and Recovery Project
MORS – (i) Military Operations Research Society
MOS – (i) Military Occupational Specialty – (a) Mit Out Sound / Motor Only Sync – (i) Mobile Object System – Model Output Statistics – Multiplayer Online Services - (a) Mean Opinion Score
MOS-CQ - (a) Mean Opinion Score - Conversational Quality (ITU-T P.800.1)
MOS-LQ - (a) Mean Opinion Score - Listening Quality (ITU-T P.800.1)
MOSFET – (a) Metal-Oxide-Semiconductor Field-Effect Transistor
MOSS – (p) MObile Submarine Simulator – (a) Moving Object Support System
MOT – (i) Ministry of Transport (UK)
MOTA – (i) Member of the Orthodontic Technicians Association
MOTESS – (a) Moving Object and Transient Event Search System
MOTO – (a) Mail Order / Telephone Order – Master of the obvious
MOU – (i) Memorandum Of Understanding
MOUT – (i) Military Operations in Urban[ized] Terrain
MOVES – (a) Modeling, Virtual Environments, and Simulation Institute
MOW – (i) Maintenance of way (also MW)
MOZ – (s) Mozambique (ISO 3166 trigram)




MP


MP – (i) Magic points – (s) Mauritius (FIPS 10-4 country code) – (i) Member of Parliament – Military Police – Missouri Pacific – (s) Northern Mariana Islands (postal symbol; ISO 3166 digram)
mPa – (s) Millipascal
MPa – (s) Megapascal
MPA - Master of Public Administration
MPA – (i) Maritime Patrol Aircraft
MPAA – (i) Motion Picture Association of America
MPC – (i) Minor Planet Center – Minor Planet Circular
MPC – (i) Military Payment Certificate
MPEC – (i) Minor Planet Electronic Circular
MPEG – (a) Motion Pictures (Coding) Experts Group
MPEV – (i) Multi-Purpose Engineering Vehicle
MPF – (i) Maritime Prepositioning Force
MPFC – (i) Medial PreFrontal Cortex
MPG - (i) Miles Per Gallon
MPMC – (i) Medial PreMotor Cortex
MPSI – (i) Member of the Pharmaceutical Society of Ireland
MPSoC – (i) MultiProcessor System-on-Chip
MPSRON – (p) Maritime Propositioning Ship Squadron




MQ


MQ
(s) Martinique (ISO 3166 digram) – Midway Islands (FIPS 10-4 territory code)
(s) Multi-mission Unmanned Aerial Vehicle (US tri-service aircraft designator)




MR


mr – (s) Marathi language (ISO 639-1 code)
MR – (s) Mauritania (FIPS 10-4 country code; ISO 3166 digram)
(i) Model Railroader Magazine
MR-ATGW – (i) Medium-Range Anti-Tank Guided Weapon
MRAV – (i) Multi-Role Armoured Vehicle
MRBM – (i) Medium Range Ballistic Missile
MRC – (i) Maintenance Requirements Card
MRD – (i) Motorized Rifle Division
MRE – (i) Meal Ready to Eat (U.S. military rations)
MRGO – (i) Mississippi River–Gulf Outlet Canal (also referred to as MR-GO or "Mr. Go")
MRGW – (i) Medium-range guided weapon
mri – (s) Māori language (ISO 639-2 code)
MRI – (i) Magnetic resonance imaging
MRL – (i) Multiple rocket launcher
(i) Montana Rail Link
MRO
(i) Maintenance, repair and operations
Mars Reconnaissance Orbiter
(s) Mauritanian ouguiya (ISO 4217 currency code)
MRPharmS – (i) Member of the Royal Pharmaceutical Society (Great Britain)
MRR – My Restaurant Rules
MRS – (i) Magnetic Resonance Spectroscopy
MRSA – (i/a) Methicillin-resistant Staphylococcus aureus (sometimes pronounced "MER-sa")
MRT
(i) Mass Rapid Transit — used as either an official or unofficial name for metro systems in Singapore, Kaohsiung, Bangkok, Taipei, Chennai, and Delhi
(s) Mauritania (ISO 3166 trigram)
MRTFB – (i) U.S. Major Range and Test Facility Base




MS


ms
(s) Malay language (ISO 639-1 code)
Millisecond
mS – (s) Millisiemens
Ms – (s) Megasecond
MS
(i) mano sinistra (Latin, "left hand")
(p) manuscript
(i) Master of Science
(s) Megasiemens
(p) Microsoft (sometimes M$)
(s) Mississippi (postal symbol)
Montserrat (ISO 3166 digram)
(i) Multiple Sclerosis
M&S
(i) Modelling & Simulation
Marks & Spencer
MSA – (s) Malay language (ISO 639-2 code)
MSB
(i) Main Support Battalion
Most Significant Bit (or Byte)
MSD – (i) Minimum Safe Distance
MSDB – (i) Multi Source Data Base
MSDE
(i) Maryland State Department of Education
(p) Microsoft Data[base] Engine
Microsoft SQL Server 2000 Desktop Engine
(i) Military Scenario Development Environment
Mission Simulation Dynamic Engine
MSDL – (i) Military Scenario Definition Language
MSE – (i) Multiple Subscriber Element
MSFS - (i) Microsoft Flight Simulator (flight simulator series)
MSEC – (p) Message Security Encryption Code ("emm-sec")
MSG
(i) MonoSodium Glutamate
Madison Square Garden (either the 1879, 1890, 1925, or current versions of the venue)
MSH
(i) Medium Support Helicopter
Mount St. Helens
MSI
(i) Micro-Star International
(p) Multispectral imagery
MSIE
(i) Microsoft Internet Explorer
Master of Science in Industrial Engineering
MSL
(i) Mars Science Laboratory
Mean Sea Level
(p) Missile
MSLP – (i) Mean Sea Level Pressure
MSM
(p) Mainstream media
(i) Men who have sex with men
Mount St Mary's School
MSN
(i) Microsoft Network
Master of Science in Nursing
MSNBC – (i) Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
MSO – (i) Multiple System Operator
MSP
Member of the Scottish Parliament
(i) Minneapolis–Saint Paul - Twin cities in Minnesota
(s) Minneapolis–Saint Paul International Airport (IATA code)
MSPA
(p) Migrant and Seasonal worker Protection Act
(a) MS Paint Adventures
MSPB – (i) Merit Systems Protection Board
MSR
(i) Main Supply Route
Module Service Record
(s) Montserrat (ISO 3166 trigram)
(i) Motor Schlepp Regulung
Mountain Safety Research (outdoor supplies manufacturer)
MSSA
Member of the Order of the Star of South Africa
(i) Methicillin-susceptible Staphylococcus aureus
(i) Military Selective Service Act
(i) Military-style semi-automatic
(i) Mind Sports South Africa
(i) Montreal Student Space Associations
MSSA Chemical Company, formerly known as Métaux Spéciaux.
MST
(i) Madison Symmetric Torus
Mountain Standard Time (UTC−7 hours)
Maastricht Aachen Airport (IATA code]]
MST3K or MST3k – (i) Mystery Science Theater 3000
MSU
(i) Michigan State University
Montana State University
Mountain State University
Lomonosov Moscow State University (Russia, a.k.a. MGU)




MT


mt – (s) Maltese language (ISO 639-1 code)
mT – (s) Millitesla
Mt – (s) Meitnerium
MT
(s) Malta (FIPS 10-4 country code; ISO 3166 digram)
Megatesla
Montana (postal symbol)
(i) Motor Transport (military)
MTA
(i) Metropolitan Transportation Authority (Boston) (now Massachusetts Bay Transportation Authority)
Metropolitan Transportation Authority
MTBF – (i) Mean time between failures
MtF – (i) Male-to-female transsexual
MTF
(i) Magnetized target fusion
Medical Treatment Facility
Message Text Format
Modulation transfer function (optics)
MTG – (i) Magic: The Gathering
MTL
(s) Maltese lira (ISO 4217 currency code)
(i) Mean Tide Level (nautical charts)* MTM – (i) Methods-Time Measurement
MTOE – (p) Modified Table of Organization and Equipment ("emm-toe")
MTP
(i) Maritime Tactical Publication
Materiel Transfer Plan
Mission Training Plan
MTQ – (s) Martinique (ISO 3166 trigram)
MTR
(i) Main and Tail Rotor (helicopter type)
Mass Transit Railway (Hong Kong metro system)
Military-Technological Revolution
MTS
(i) Maintenance Training System
Manitoba Telephone System and Manitoba Telecom Services, former names of Bell MTS
Michigan Terminal/Timesharing System
Movement Tracking System
Multichannel television sound
Multi-Technical Services
MTT – (p) Methylthiazol tetrazolium (assay)
MTU
(i) Tankovei Mostoukladchik (Russian Танковый Мостоукладчик, "Tank Bridge-Layer") †
(i) Motoren- und Turbinen-Union (German engine manufacturer, now split into MTU Friedrichshafen and MTU Aero Engines
MTV
(i) MainosTeleVisio (Finnish commercial TV company)
Music TeleVision
MTVL – (i) Mobile Tracked Vehicle, Light
MTWS – (i) MAGTF Tactical Warfare System




MU


MU
(s) Mauritius (ISO 3166 digram)
(s) Oman (FIPS 10-4 country code; from Muscat)
Manchester United (British football club)
MUA
(i) Meritorious Unit Award
Military Utility Assessment
(i) Make-up Artist
MUR – (s) Mauritius rupee (ISO 4217 currency code)
MUS – (s) Mauritius (ISO 3166 trigram)




MV


mV – (s) Millivolt
MV – (s) Maldives (FIPS 10-4 country code; ISO 3166 digram) – Megavolt – (i) Motor Vehicle – Motor Vessel
MVC – (i) Missouri Valley Conference
MVFC – (i) Missouri Valley Football Conference
MVNO – (i) Mobile virtual network operator
MVP – (i) Most Valuable Player
MVR – (s) Maldivian rufiyaa (ISO 4217 currency code)




MW


mW – (s) Milliwatt
MW
(i) Maintenance of way (also MOW)
(s) Malawi (ISO 3166 digram)
(i) Medium Wave (radio)
(s) Megawatt
(i) Mountain West (Conference) (formal initialism since July 2011)
MWC
(i) Maritime Warfare Centre (various nations)
Mountain West Conference (still used informally, although the league has adopted "MW")
MWESH – (p) Machismo Wizards Extended SHelter (operating system)
MWI – (s) Malawi (ISO 3166 trigram)
MWK – (s) Malawian kwacha (ISO 4217 currency code)
MWOA – (i) Mount Wilson Observatory Association
MWR – (i) Morale, Welfare, and Recreation
MWTB - (a) Mounted Warfare Test Bed




MX


MX – (a) Mail Exchange – (s) Mexico (FIPS 10-4 country code; ISO 3166 digram) – (p) Missile eXperimental
MXN – (s) Mexican peso (ISO 4217 currency code)




MY


my – (s) Burmese language (ISO 639-1 code)
MY – (s) Malaysia (FIPS 10-4 country code; ISO 3166 digram)
mya – (s) Burmese language (ISO 639-2 code) – (i) million years ago
MYOB – (i) Mind Your Own Business
MYR – (s) Malaysian ringgit (ISO 4217 currency code)
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 (FIPS 10-4 country code; ISO 3166 digram)
MZN – (s) Mozambique metical (ISO 4217 currency code)




References

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