What does M stand for?

Absolute Magnitude [Astronomy]

All India Reporter, Madras Series [A publication] (ILCA)

Angular Momentum [Symbol] [Physics]

Bending Moment [Aerospace] (AAG)

Days before Move Operation [Usually followed by a number] [NASA] (KSC)

Dynamic Testing Division (SAUO)

Em [Printing] (WDMC)

Emma [Phonetic alphabet] [In use in 1904 and 1914] (DSUE)

Experimental & Pit Division (SAUO)

Field Goals Missed [Football, basketball]

Figure of Merit (SAUS)

First Sergeant [Army skill qualification identifier]

Ground, Mobile [JETDS nomenclature]

Human Being Movement [Rorschach] [Psychology]

Hungary [IYRU nationality code] (IYR)

Imperial Chemical Industries [Great Britain] [Research code symbol]

Indian Law Reports, Madras Series [A publication] (DLA)

Instrumental Magnitude [Earthquakes]

Intensity of Magnetization [Symbol] (DEN)

J. F. Macfarlan & Co. [Scotland] [Research code symbol]

Lundi [French] (ASC)

Macerare [Macerate] [Pharmacy]

Mach (SHCU)

Machine

Mach Number

MacNeil [Herman A.] [Designer's mark, when appearing on US coins]

Macpherson's Scotch Session Cases [1862-73] [A publication] (DLA)

Macrophage (MELL)

Macula (SAUS)

Maestrale [Northwest wind] (GIS)

Magenta (WDMC)

Magister [Master] [Latin]

Magistrale (GIS)

Magistrate

Magistrate Court (SAUO)

Magnaflux

Magnetic

Magnetic Moment [Symbol] (DEN)

Magnetic Polarization [Symbol] (DEN)

Magnetization (ODA)

Magnetron (MDG)

Magnification (NTCM)

Magnitude

Maiden

Mail

Main

Maintainability [or Maintenance] (MCD)

Maintenance and Test Assemblies [JETDS nomenclature]

Majesty

Major [Cycle]

Make

Malaysian Tin Bureau (EA)

Male [Electronics]

Malignant [Medicine]

Maloti [Plural of Loti] [Monetary Unit] [Lesotho] (BARN)

Malta (MILB)

Mammillary [Medicine] (EDAA)

Man

Management Council of the American Trucking Associations (EA)

Mandatory (KSC)

Mandible (MELL)

Mane [Morning] [Pharmacy]

Maneuver [Military technology] (DDF)

Maneuvering Ship [In speed triangle of relative movement problems]

Manichaean Middle Persian

Manila [Rope]

Manipulus [A Handful] [Pharmacy]

Mannitol [Organic chemistry]

Mano [Hand] [Spanish]

Mantissa [Decimal portion of a logarithm]

Manual

Manufactured Housing Task Force (EA)

Manufacturer (SAUO)

Map

March

Mare [Thoroughbred racing]

Maria [Mary]

Marijuana (MELL)

Marine [FCC] (NTCM)

Marine [Insurance]

Marine Corps [When used as prefix with plane designation]

Marinus de Caramanico [Flourished, 1269-85] [Authority cited in pre-1607 legal work] (DSA)

Maritus [Bridegroom] [Latin]

Mark [Monetary unit] [German] (GPO)

Marker [Beacon] (AFM)

Markka [Monetary unit] [Finland]

Marksman [British military] (DMA)

Marquis [or Marquess]

Married

Mars

Marshal

Marshalling Area (SAUO)

Martial [Medicine] (EDAA)

Martin Co. Division [Martin-Marietta Corp.] [ICAO aircraft manufacturer identifier] (ICAO)

Martinus Gosia [Authority cited in pre-1607 legal work] (DSA)

Martinus Zamorensis [Flourished, 13th century] [Authority cited in pre-1607 legal work] (DSA)

Martyr

Marxist [Politics]

Masculine

Masochism (CDAI)

Mason (ROG)

Mass (GOBB)

Massachusetts State Library, Boston, MA [Library symbol] [Library of Congress] (LCLS)

Massage

Masseur [Ranking title] [British Royal Navy]

Massive [Agriculture]

Master

Mate [of a ship]

Mater [Mother] [Latin]

Maternal (MELL)

Mathematics [Secondary school course] [British]

Matinee

Matins [Early morning prayers]

Matrix

Matron [British military] (DMA)

Mature

Mature Audiences [Movie rating] [Replaced by GP]

Matured Bonds [Investment term] (DFIT)

Mauthner [Cell] [Neurology]

Maxilla (MELL)

Maximal [or Maximum] [Medicine]

Maximum Value [Electronics]

Maxwell [Electronics] (DEN)

May

Mean [Arithmetic average]

Mean Active Maintenance Downtime [Computer science]

Meaningfulness [Psychology]

Mean Square

Measles (MELL)

Measure [Music]

Measured Ceiling [Aviation]

Meatus (MELL)

Mechanical

Mechanical Jack Manufacturers Association (EA)

Mechanized [Military technology] (DDF)

Mechlorethamine [Also, HN, HN2, MBA, NM] [Mustargen, nitrogen mustard] [Antineoplastic drug]

Medal (ADA)

Media [Laboratory] (AAMN)

Medial (DAVI)

Mediator

Medical

Medical Service (SAUO)

Medicare (MELL)

Medicinae [Of Medicine] [Latin]

Medicine

Medieval

Medium [Size designation for clothing, etc.]

Medium [or 2-engine] Plane

Mega [A prefix meaning multiplied by one million] [Symbol]

Megabyte [Data storage capacity] [Computer science]

Megaton [Emergency Management] (EMA)

Megavolt [Medicine] (EDAA)

Megohm (AAG)

Melendus [Flourished, 1188-1209] [Authority cited in pre-1607 legal work] (DSA)

Melittin [Bee venom]

Melphalan [Also, A, L-PAM, MPH, MPL] [Antineoplastic drug]

Melts At ____ [Followed by a temperature]

Member

Member of (SAUO)

Membrana [Membrane] [Anatomy]

Memorandum

Memoria [Memory] [Latin]

Memorial; Journal Officiel du Grand Duche de Luxembourg [A publication] (ILCA)

Memory

Meningeal (MELL)

Mensura [By Measure] [Pharmacy] (ROG)

Mentum [Chin]

Menzies' Cape Colony Supreme Court Reports [A publication] (DLA)

Meperidine [Also, MEP] [An analgesic]

Mercaptopurine [Purinethol] [Also, MP, P] [Antineoplastic drug]

Mercury [Chemical symbol is Hg] (KSC)

Merehurst [Publisher] [British]

Merge [Computer science] (IBMDP)

Merides [Latin] [Noon] (WDMC)

Meridialis (GIS)

Meridian (Upper Branch)

Meridies [Noon] [Latin]

Meridional Part [Navigation]

Mesangium [Anatomy]

Mesh

Mesial [Dentistry]

Mesomeric [Organic chemistry]

Mesophyll [Botany]

Messier [M31, M13, M57, etc.] [Astronomy term]

Metabolite

Metacenter

Metal

Metal Belt Institute (EA)

Metalsmith [Navy]

Metamorphosis [Phylogeny]

Metaproterenol [Pharmacology]

Metastasis [Oncology]

Meteorological [JETDS nomenclature]

Meter (WDMC)

Methionine [One-letter symbol; see Met]

Method

Methodist

Methotrexate [Antineoplastic drug]

Metoclopramide [An antiemetic]

Metronome

Metropolitan

Mews

Mezzo [Moderate] [Music]

Mezzodi [South] (GIS)

Michaelmas Term [British] [Legal term] (ILCA)

Micrococcus [Genus of bacteria]

Microfilaria [Medicine] (EDAA)

Micrometer

Microphones [JETDS nomenclature] [Military] (CET)

Microprocessor

Microsporum [Genus of fungi]

Microtubule [Cytology]

Mid [Linguistics] (IEL)

Midazolan [An anesthetic]

Midday (ADA)

Middle

Middle School [British]

Middle Term of a Syllogism [Logistics] (WDAA)

Midfield [Men's lacrosse position]

Midline

Midnight (ROG)

Midwest Stock Exchange [Chicago, IL]

Mike [Phonetic alphabet] [International] [World War II] (DSUE)

Mil [Monetary unit] [Cyprus]

Mild (DAVI)

Mile (WDMC)

Miles

Miles' Pennsylvania Reports [A publication] (DLA)

Military

Militia

Milk (ROG)

Mill

Mille [Thousand] [Roman numeral]

Milli (DFIT)

Millime [Monetary unit] [Tunisia]

Millimicrometer (IAA)

Millimicron (IAA)

Million

Mill Mutual Fire Prevention Bureau (EA)

Mine

Minesweeper [Navy]

Miniature [Horticulture]

Minim

Minimum (ADA)

Ministry

Minor

Mint [Condition] [Numismatics, etc.]

Minus

Minute

Miotic [Biology]

Mira [A star] [Astronomy] (OA)

Mired (IAA)

Misce [Mix] [Pharmacy]

Miscellaneous

Miscible

Mishnah [Basis of the Talmud] (BJA)

Missile [Air Force]

Missile Carrier Aircraft [Designation for all US military aircraft]

Missing [Data]

Missing (Weather Reports Only) [NWS] (FAAC)

Mission

Mississippian [Geological period] (QSUL)

Mist [Meteorology]

Mistura [Mixture] [Pharmacy]

Mitic Subgroup [Magnetite, chromite, hematite, ilmenite, titanite, perofskite, rutile] [CIPW classification] [Geology]

Mitochondrion [Cytology]

Mitomycin [Also, MC, MT] [Antineoplastic drug]

Mitosis [Cytology]

Mitte [Send] [Latin]

Mix [or Mixture]

Mixed School [British]

Mobile [Missile launch environment symbol] [Biology]

Mobilization [as in M-Day] [Military] (AABC)

Modal (Verb) [Linguistics]

Mode

Model [in military nomenclature]

MODEM [Computer science]

Moderate

Moderate Party (Sweden) [Political party] (PSAP)

Moderate Sea or Swell [Meteorology]

Modern [Post-1920] [Deltiology]

Modification [FCC] (NTCM)

Modiolus (MELL)

Modulation Depth [Broadcasting]

Modulator (IAA)

Modulus

Moisture

Mol [or Mole] [Measurement] (DAVI)

Molar [Permanent] [Dentistry]

Molar [Solute concentration by volume] [Chemistry]

Molarity (MELL)

Molar Mass [Symbol] [IUPAC]

Mole

Molecular Weight [Also, MOL WT, MW]

Moment

Moment Magnitude [Emergency Management] (EMA)

Moment of Force [Symbol] [IUPAC]

Monastery

Monday

Money

Monitor (MDG)

Monkey [Phonetic alphabet] [Royal Navy] [World War I] [Pre-World War II] (DSUE)

Monochrome (IAA)

Monoclonal [Biochemistry]

Monocyte [Hematology]

Monograph

Monophage [Biology]

Monoplane

Monotype (DGA)

Monsieur [Mister] [French]

Monsoon

Mont [Monte, etc.] [Italy and Sicily only]

Montana (DLA)

Montavit Co. [Austria] [Research code symbol]

Month

Monthly

Montmorillonite [A mineral]

Montreal Stock Exchange

Monumentum [Monument] [Latin]

Moon

More [Telegraphy] (PCTE)

Morgan [George T.] [Designer's mark, when appearing on US coins]

Morison's Dictionary of Decisions, Scotch Court of Session [1540-1808] [A publication] (DLA)

Morning

Morphine [Slang]

Morphological Rule [Linguistics]

Morphometric Analysis [Botany]

Mort [Dead] [French] (ROG)

Mortar

Mortgage

Mortis [Of Death] [Latin]

Mot [Linguistics] (IEL)

Motel

Mother

Motivational Ability

Motor

Motorship (DS)

Motorway [Traffic sign] [British]

Moulder [Navy rating] [British]

Mound (MSA)

Mountain

Mouth

Move Being Made [Computer science]

Movement [Neurology]

Movement Response [Used in Rorschach test scoring] (DIPS)

[Time in Days Before] Move Operations

Mu [Twelfth letter of the Greek alphabet] (DAVI)

Mucoid

Mucoid Colony [Biochemistry] (DAVI)

Mucosa [Medicine] (EDAA)

Mucous [Medicine] (EDAA)

Mucus (MELL)

Mud

Muddy [Track condition] [Thoroughbred racing]

Muddy [Quality of the bottom] [Nautical charts]

Muenchen [German license plate city code]

Multipara (MAE)

Multiplier

Municipal Premises [Public-performance tariff class] [British]

Murmur [Heart] [Medicine]

Muscarinic (DB)

Musculus [Muscle] [Anatomy]

Music [Films, television, etc.]

Mustard Gas [Also, H, HD, HS, HT] [Poison gas] [US Chemical Corps symbol]

Muster

Mutitas [Dullness] [Latin]

Mutual Adjustment Bureau of Cloth and Garment Trades (EA)

Mutual Companies

Mutual Inductance [Symbol] [IUPAC]

Mycelium [Biology]

Mycobacterium [Genus of microorganisms]

Mycoplasma [Medicine] (MAE)

Mydriacyl (SAUS)

Myocandida [Medicine] (EDAA)

Myopia

Myosin [Muscle physiology]

Nautical Mile [Nautical term] (HRNC)

New York Miscellaneous Reports [A publication] (DLA)

Nomina [Names] [Probably a misprint for NN, by some supposed to denote St. Mary, patron saint of girls] [Latin] (ROG)

Noon [Meridies]

Ohio Miscellaneous Reports [A publication] (DLA)

One Thousand [Roman numeral]

Ordered Multistate [Botany]

Pole Strength (SAUS)

Queen Mary (DLA)

Radiant Exitance [Symbol] [IUPAC]

Reckitt & Sons Ltd. [Great Britain] [Research code symbol]

Red Star of Prominent Titanium Oxide Intensity [Astronomy] (BARN)

Refractive Modulus (IDOE)

Strength of Pole [Chemistry] (DAVI)

The Meadowlands, East Rutherford, N.J. [Horse racing track]

Thioinosine [One-letter symbol; see SIno, Sno]

Thousand [Lumber] (WOHB)

Time of Maneuver

University of Michigan, Ann Arbor (SAUO)

Median

Thousand

Alveolar Capillary Membrane [Medicine] (QSUL)

Apparent Magnitude (ODA)

Em [Printing] (WDMC)

Intercontinental Areas (Eastern Hemisphere) [MARC geographic area code] [Library of Congress] (LCCP)

Mach (NAKS)

Magenta (WDMC)

Magnetic Quantum Number [Atomic physics] [Symbol]

Main [Menu] [Computer science] [Telecommunications]

Maintainability (NAKS)

Maintenance Coefficient [Microbiology] (QSUL)

Major Cycle (NAKS)

Maker (SAUO)

Male (DD)

Mandatory (NAKS)

Manual (NAKS)

Marginal Propensity to Import [Economics]

Masculine (SHCU)

masculinum (SAUS)

Mass [Symbol] [IUPAC]

Matrix (NAKS)

Mean (DIPS)

Medium [Spectral]

Mega (NAKS)

Mercury (NAKS)

Meridian (Lower Branch)

Meta [Chemistry]

Metabolized [Medicine] (QSUL)

Meter [SI unit of length]

Methyl [As substituent on nucleoside] [Biochemistry]

Micro (WGA)

Micrometer (ABAC)

Middle (NAKS)

Midship [Shipping] (DS)

Mihi [To Me] [Latin] (EES)

mile (WDMC)

Milli- [A prefix meaning divided by 1000] [SI symbol]

Millimicron (DIPS)

Million (NAKS)

Mil[thousand] (DAVI)

Minim [Medicine] (BCRP)

Missing (NAKS)

Modified [Regulation or order modified] [Used in Shepard's Citations] [Legal term] (DLA)

Modulation Coefficient (IDOE)

Molal [Solute concentration by weight] [Chemistry]

Molality (MELL)

Molar [Tooth, deciduous] [Dentistry] (DAVI)

Monitor (NAKS)

Month (WDMC)

Monthly (RION)

Morning (WDMC)

Morpha [Form] [Biology]

Motile [Sperm] (MAE)

Response to Human Being Movement [Rorschach] [Psychology]