Dictionary of Medical Acronyms & Abbreviations

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[ M ]

M₁ | M₂ | M₃ | M₄ | M₅ | M₆ | M₇ | M₈ | M₉ | M₁₀ |

M blood factor in the MNS blood group system; chin [Lat. mentum]; concentration in moles per liter; death [Lat. mors]; dullness [of sound, Lat. mutitas]; macerate; macroglobulin; macroscopic magnetization vector; magnetization; magnification; male; malignant; married; masculine; mass; massage; maternal contribution; matrix; mature; maximum; mean; meatus; median; mediator; medical, medicine; medium; mega; megohm; membrane; memory; mental; mesial; metabolite; metanephrine; metastases; meter; methionine; methotrexate; Micrococcus; Microspora; minim; minute; mitochondria; mitosis; mix, mixed, mixture; mobility; molar [permanent tooth]; molar [solution]; molarity; mole; molecular; moment of force; monkey; monocyte; month; morgan; morphine; mother; motile; mouse; mucoid [colony]; mucous; multipara; murmur [cardiac]; muscle; muscular response to an electrical stimulation of its motor nerve [wave]; Mycobacterium; Mycoplasma; myeloma or macroglobulinemia [component]; myopia; strength of pole; thousand [Lat. mille]
M- mega- [10⁶]
M0 leukemia with large granular blasts and negative myeloperoxidase [Franco-American-British (FAB) classification]; no distant tumor metastases [TNM (tumor-node-metastasis) classification]; no metastases [TNM (tumor-node-metastasis) classification]; no tumor metastases [TNM (tumor-node-metastasis) classification]
M1 breast tumor, no distant metastases [TNM (tumor-node-metastasis) classification]; distant metastases [TNM (tumor-node-metastasis) classification]; distant tumor metastases [TNM (tumor-node-metastasis) classification]; leukemia with poorly differentiated myeloblasts [Franco-American-British (FAB) classification]; primary motor area
1M, 2M, 3M, 4M, 5M first, second, third, fourth, fifth metatarsal [head]
M₁ mitral component [first heart sound]; mitral first [sound]; myeloblast; slight dullness
MI, M-I first meiotic metaphase
M2 breast tumor, distant metastases [TNM (tumor-node-metastasis) classification]; leukemia with myeloblasts with differentiation and Auer rods [Franco-American-British (FAB) classification]
2-M 2-microglobulin
M₂ dose per square meter of body surface; marked dullness; promyelocyte
MII, M-II second meiotic metaphase
M3 leukemia with hypergranular promyelocytes and multiple Auer rods [Franco-American-British (FAB) classification]
3-M [syndrome] initials for Miller, McKusick, and Malvaux, who first described the syndrome
M/3 middle third
M₃ absolute dullness; myelocyte at the 3rd stage of maturation
M4 leukemia monoblastic differentiation [Franco-American-British (FAB) classification]
M₄ myelocyte at the 4th stage of maturation
M5 monoblastic leukemia [Franco-American-British (FAB) classification]
M₅ metamyelocyte
M6 erythroleukemia with dyserythropoiesis and megaloblastosis [Franco-American-British (FAB) classification]
M₆ band form in the 6th stage of myelocyte maturation
M7 megakaryoblastic leukemia [Franco-American-British (FAB) classification]
M₇ polymorphonuclear neutrophil
M/10 tenth molar solution
M/100 hundredth molar solution
m electron rest mass; electromagnetic moment; magnetic moment; magnetic quantum number; male; mass; median; melting [temperature]; metastable; meter; milli-; minim; minimum; minute; molality; molar [deciduous tooth]; mutated
m^-1 per meter
m² square meter
m³ cubic meter
m₈ spin quantum number
μ see mu
MA macrophage aggregate; malignant arrhythmia; management and administration; mandelic acid; Martin-Albright [syndrome]; masseter; Master of Arts; maternal age; matrix; maximum amplitude; mean arterial; mechanical activity; medial amygdaloid [nucleus]; medical assistance; medical audit; medical authorization; mega-ampere; megaloblastic anemia; megestrol acetate; membrane antigen; menstrual age; mental age; mentum anterior [fetal position]; metatarsus adductus; meter-angle; methacrylic acid; microadenoma; microagglutination; microaneurysm; microscopic agglutination; Miller-Abbott [tube]; milliampere; mitochondrial antibody; mitogen activation; mitotic apparatus; mixed agglutination; mobile agent; moderately advanced; monoamine; monoarthritis; monoclonal antibody; motor area; movement artifacts; moving average; multiple action; muscle activity; mutagenic activity; myelinated axon; myoclonic absences
MA-104 embryonic rhesus monkey kidney cells
MA-111 embryonic rabbit kidney cells
MA-163 human embryonic thymus cells
MA-184 newborn human foreskin cells
M/A male, altered [animal]; mood and/or affect
Ma mass of atom
mA, ma milliampere; meter-angle
m milliangstrom
ma milliampere
μA microampere
MAA macroaggregated albumin; maleylacetoacetic acid; Medical Assistance for the Aged; melanoma-associated antigen; methacrylic acid; microphthalmia (or anophthalmos) with associated anomalies; moderate aplastic anemia; monoarticular arthritis
MAAC maximum allowable actual charges
MAACL Multiple Affect Adjective Check List
MAAGB Medical Artists Association of Great Britain
MAAP multiple arbitrary amplicon profiling
MAAS Multicenter Anti-Atherosclerosis Study; Multicenter Antiatheroma Study
MAB, MAb, mAB monoclonal antibody
m-AB m-aminobenzamide
MABIS Munich and Berlin Infarction Study
MABP mean arterial blood pressure
Mabs, mABs, mAbs monoclonal antibodies
MAC MacConkey [broth]; magnetic authentication code; major ambulatory category; malignancy-associated changes; maximum allowable concentration; maximum aerobic capacity; maximum allowable cost; medical alert center; membrane attack complex; message authentication code; midarm circumference; minimum alveolar concentration; minimum antibiotic concentration; mitral anular calcium; modulator of adenylate cyclase; monitored anesthesia care; multiaccess catheter; Mycobacterium avium complex
MACAS Marburg Cardiomyopathy Study
MacCAT-CR MacArthur Competence Assessment Tool for Clinical Research
MACDP Metropolitan Atlanta Congenital Defects Program
MACE main adverse coronary event; major adverse cardiac events; major cardiac event; Mayo Asymptomatic Carotid Endarterectomy [trial]
MAC-ei minimum alveolar concentration-endotracheal intubation
MACEmed Middleware Architecture Committee for Education in Medicine
macer maceration
MACH machine activity [UMLS]; Mortality Assessment in Congestive Heart Failure [study]
mAChR muscarinic acetylcholine receptor
MacMV Maclura mosaic virus
MACR mean axillary count rate
mACR muscarinic acetylcholine receptor
macro macrocyte, macrocytic; macroscopic
MACS maximum aortic cusp separation; Multicenter Acquired Immunodeficiency Syndrome (AIDS) Cohort Study; myristoylated alanine-rich protein kinase C substrate
MACT maximum achievable control technology
MACTAR McMaster-Toronto arthritis and rheumatism [questionnaire]
MACV Machupo virus
MAD major affective disorder; mandibulo-acral dysplasia; master accession database; maximum allowable dose; mean axis direction; median absolute deviation; methylandrostenediol; mind-altering drug; minimum average dose; mitotic arrest defective; mucosal atomization device; multiple autoimmune disorder; myoadenylate deaminase
mAD, MADA muscle adenylate deaminase; myoadenylate deaminase
MADAM Moexipril as Antihypertensive Drug after Menopause [study]
mADAM mouse A disintegrin and A metalloprotease
MadCAM mucosal addressin cell adhesion molecule
MADD Mothers Against Drunk Driving; multiple acyl-CoA dehydrogenase deficiency
MADDS monoacetyldiaminodiphenylsulfone
MADGE microliter array diagonal gel electrophoresis
MADIT Multicenter Automatic Defibrillator Implantation Trial
MADIT/CES Multicenter Automatic Defibrillator Implantation Trial Cost/Effectiveness Study
MADPA Medicaid Antidiscriminatory Drug Pricing and Patient Benefit Restoration Act
MADRS Medicare Automated Data Retrieval System; Montgomery-Asberg Depression Rating Scale
MADT morphology alteration and disintegration test
MADU methylaminodeoxyuridine
MADV Madrid virus
MAE mean absolute error; medical air evacuation; medication administration error; 2-methylaminoethanol; moves all extremities; multilingual aphasia examination; myoclonic astatic epilepsy
MAF macrophage activation factor; macrophage agglutinating factor; maximum atrial fragmentation; minimum audible field; mouse amniotic fluid
MAFD manic affective disorder
MAFF Ministry of Agriculture, Fisheries and Food [UK]
MAFH macroaggregated ferrous hydroxide
MAFI Medic Alert Foundation International
MAG mercaptoacetyltriglycerine; multi-tumor aberrant growth; myelin-associated glycoprotein
Mag magnesium
mAg minor antigen
mag, magn large [Lat. magnus]; magnification
mag cit magnesium citrate
MAGE melanoma antigen
MAGF male accessory gland fluid
MAggF macrophage agglutination factor
MAGIC Magnesium in Cardiac Arrest [trial]; Magnesium in Coronaries [trial]; microprobe analysis generalized intensity correction; mouth (or mucosal) and genital ulceration with inflamed cartilage [syndrome]
MAGICA Magnesium in Cardiac Arrhythmia [trial]
MAGP microfibril-associated glycoprotein
MAGPIE Magnesium Sulfate Compared with Placebo in Pre-Eclampsia [study]
MAGUK membrane-associated guanylate kinase
MAGV Maguari virus
MagV mag virus
mAH, mA-h milliampere-hours
MAHA microangiopathic hemolytic anemia
MAHH malignancy-associated humoral hypercalcemia
MAHI, MAHIV medically acquired human immunodeficiency virus
MAHST Multicenter Austrian Hemodilution Stroke Trial
MaHV Macropodid herpesvirus
MAI microscopic aggregation index; movement assessment of infants; multilevel assessment instrument; Mycobacterium avium infection; Mycobacterium avium-intracellulare
MAIDS mouse acquired immunodeficiency syndrome
MAIESTRO The Michael Reese Hospital-Institute of Technology Expert System for Stroke
MAIN medication-induced, autoimmune, infectious, and neoplastic [diseases associated with antiphospholipid antibodies]
MAIPA monoclonal antibody-specific immobilization of platelet antigens
MAIR-IR multiple attenuated internal reflexion infrared [spectroscopy]
MAIS manual axial in-line stabilization; mild androgen insensitivity syndrome
MAJIC Mayo Japan Investigation on Chronic Total Occlusion
MAKA major karyotypic abnormality
MAL malemide; midaxillary line; motor activity log
Mal malate; malfunction; malignancy
mal malaise; male; malposition
Mal-BSA maleated bovine serum albumin
MALD matrix-assisted laser desorption
MALDI matrix-assisted laser desorption/ ionization
MALDI-MS matrix-assisted laser desorption/ionization mass spectrometry
MALDI-TOF matrix-assisted laser desorption/ionization time-of-flight
MALG Minnesota antilymphoblast globulin
MALiMET Master List of Medical Indexing Terms
MALLS multi-angle laser light scattering
MALS magnetic alignment and light scattering
MALT male, altered [animal]; mucosa-associated lymphoid tissue; Munich Alcoholism Test
MALTOMA mucosal associated lymphoid tissue lymphoma
MALV Malakal virus
MAM median age at menarche; metabolically active mass; methylazoxymethanol
mam milliampere-minute; myriameter
M+Am compound myopic astigmatism
6-MAM monoacetyl-morphine
MAMA medical application multimedia authoring; monoallelic mutation analysis; monoclonal anti-malignin antibody; Mothers Against Misuse and Abuse
MAM Ac methylazoxymethanol acetate
MAMC mean arm muscle circumference
mA-min, ma-min milliampere-minute
Mammo mammogram, mammography
MAN metropolitan area network
MAN, Man mannose
man manipulate
MANA mannosidase alpha
MANB mannosidase beta
ManBP mannan-binding protein
mand mandible, mandibular
MANET mobile ad-hoc network
manifest manifestation
manip manipulation
MANOVA multivariate analysis of variance
MAN-6-P mannose-6-phosphate
MANU manufactured object [UMLS]
MANV Manzanilla virus
MAN/WAN metropolitan area network/wide area network
MAO Master of the Art of Obstetrics; maximal acid output; monoamine oxidase
MAOA monoamine oxidase A
MAOB monoamine oxidase B
MAOI monoamine oxidase inhibitor
MAOUSSC Model of Assistance and Orientation of a User within a System of Coding
MAP malignant atrophic papulosis; mandibular angle plane; maturation-activated protein; maximal aerobic power; maximum a posteriori; mean airway pressure; mean aortic pressure; mean arterial pressure; Medical Audit Program; megaloblastic anemia of pregnancy; memory algorithm processor; mercapturic acid pathway; methyl acceptor protein; methylacetoxy-progesterone; methylaminopurine; microtubule-associated protein; minimum audible pressure; mitogen-activated protein; modified atmosphere packaging; moment angle plotter; monophasic action potential; motor [nerve] action potential; mouse antibody production; multiphasic algorithmic protocol; multiple antigen peptide; muscle action potential; mussel adhesive protein
MAPA muscle adenosine phosphoric acid
MAPC migrating action potential complex
MAPCA major aorto-pulmonary collateral artery
MAPE mean absolute percentage error
MAPF microatomized protein food
MAPHY Metoprolol Atherosclerosis Prevention in Hypertension [study]
MAPI microbial alkaline protease inhibitor; Millon Adolescent Personality Inventory
MAPK mitogen-activated protein kinase
MAPK-K mitogen-activated protein kinase kinase
MAPKP mitogen-activated protein kinase phosphatase
MAPP multiple asynchronous parallel processing
MAPPET Management Strategy and Prognosis of Pulmonary Embolism Trial
MAPREC mutant analysis by polymerase chain reaction and restriction enzyme cleavage
MAPS Make a Picture Story [test]; Micro-AIDS Processing System; Multidimensional Affect and Pain Survey; Multivessel Angioplasty Prognosis Study
MAPT microtubule-associated protein tau
MAPV Mapputta virus; mean area-peak value
MAR main admissions room; marasmus; marrow; matrix attachment region [genomic sequencing]; maximal aggregation ratio; mean atrial rate; medication administration record; microanalysis reagent; minimal angle resolution; mixed antiglobulin reaction; multiple aberration region; multivariate autoregressive [model]
mar margin; marker [chromosome]
MARAV Maraba virus
MARC machine-readable catalog; machine-readable cataloging; Multicenter Asthma Research Collaboration; multifocal and recurrent choroidopathy
MARCKS myristoylated alanine-rich protein C kinase substrate
MarHV Marmomid herpesvirus
MARIAC Magnetic Resonance Image Analysis Research Centre [UK]
MarMV Maracuja virus
MARS magnetic anchor retinal stimulation; medical archival system; Medical Article Record System; methionyl-transfer ribonucleic acid synthetase; Mevinolin Atherosclerosis Regression Study; Missouri Automated Radiology System; mobile autonomous robot software; molecular adsorbent recirculating system; molecular adsorbents system; Monitored Atherosclerosis Regression Study; mouse antirat serum; multivariate adaptive regression spline [algorithm]
MARSA methicillin-aminoglycoside-resistant Staphylococcus aureus
MAR/SAR matrix attachment region/scaffold attachment region [genomic sequencing]
MART multiplicative algebraic reconstruction technique
MARV Marburg virus
MARVIN Multi-Agent Robot Vagabond on Information Networks
mar(X) marker X [chromosome]
MAS macrophage activation syndrome; magic angle spinning; Manifest Anxiety Scale; marker-assisted selection; maximum average score; McCune-Albright syndrome; meconium aspiration syndrome; medical administrative services; medical advisory service; medical audit study; meiosis activation sterol; mesoatrial shunt; milk-alkali syndrome; milliampere-second; minor axis shortening; mitral aortic septum; mobile arm support; monoclonal antibodies; Morgagni-Adams-Stokes [syndrome]; motion analysis system; motor assessment scale; multi-agent system; multiple access server [telemedicine]; myoclonic astatic seizures