LibGuides: GovSpeak: A Guide to U.S. Government Acronyms & Abbreviations: M

M2M	Mark-to-Market (unable to verify 4/25)
M3	Manufacturers' Shipments, Inventories, and Orders Survey \| Modernization and Migration Management
M3UFO	Manufacturers' Unfilled Orders Survey
MA3T	Market Acceptance of Advanced Automotive Technologies
MAC	Market Access and Compliance (unable to verify 1/20) \| Medicaid and CHIP \| Medicare Administrative Contractor \| Migration Analysis Center
MACBIS	Medicaid and CHIP Business Information System
MACOSH	Maritime Advisory Committee for Occupational Safety and Health
MACPAC	Medicaid and CHIP Payment and Access Commission
MACPro	Medicaid and CHIP Program
MACStats	Medicaid and CHIP Data Book
MADCAP	Multimission Automated Deepspace Conjunction Assessment Process
MADIS	Meteorological Assimilation Data Ingest System
MADS	Metadata Authority Description Schema
MAEGLIN	Molecular Analyzer for Efficient Gas-phase Low-power INterrogation
MAF	Master Address File
MAF-ARF	Master Address File—Auxiliary Reference file
MAFCL	Methods and Application of Food Composition Laboratory
MAGIC	Middleware and Grid Interagency Coordination Team
MAHC	Model Aquatic Health Code
MAHI	Mussel Assemblage Health Index
MAIA	Multi-Angle Imager for Aerosols
MAIRS	Monsoon Asia Integrated Regional Study (unable to verify 8/17)
MAL	Marketing Assistance Loans \| Mission Area Liaison Division
MAML	Metal Additive Manufacturing Laboratory
MANTL	Micro and Nano Technologies Laboratories

MAP	Market Access Program \| Risk Mapping, Assessment and Planning (changed to Risk MAP) \| Museum Assessment Program
MAPP	Modeling, Analysis, Predictions, and Projections
MAPS	Mapping and Analysis for Public Safety (unable to verify 10/19) \| Mass Attacks in Public Spaces \| Mobile Applications for Public Safety (unable to verify 10/23) \| Monitoring Avian Productivity and Survivorship
MAP-X	Mission Analytics Portal-External
MARAD	Maritime Administration
MARC	Machine-Readable Cataloging \| Modified Age & Race Census
MARI	Minority HIV/AIDS Research Initiative (unable to verify 6/22)
MARINe	Multi-Agency Rocky Intertidal Network
MarineGEO	Marine Global Earth Observatory
MARPLOT	Mapping Application for Response, Planning, and Local Operational Tasks
MARSSIM	Multi-Agency Radiation Survey and Site Investigation Manual
MARTS	Advance Monthly Retail Trade Survey
MARVEL	Machine Assisted Realization of the Virtual Electronic Library
MAS	Multiple Award Schedule
MASCD	Mission Assurance Standards and Capabilities Division
mase	Model-Assisted Survey Estimation
MASS	Management Assessment Subsystem (unable to verify 4/25)
MAST	Marriage Strengthening Research and Dissemination Center \| Mission Accountability Support Tracker
MAT	Medication-Assisted Treatment (unable to verify 1/23)
MATBOX	Microstructure Analysis Toolbox
MATCH	Medications at Transitions and Clinical Handoffs \| Metadata Access Tool for Climate and Health (discontinued 6/18)
MATERIAL	Machine Translation for English Retrieval of Information in Any Language
MATES	Multi-Agency Tissue Engineering Science (unable to verify 2/16)
MATRIX	Multi-State Anti-Terrorism Information Exchange (non-gov site)
MATS	Mercury and Air Toxics Standards
MAUDE	Manufacturer and User Facility Device Experience
MAVEN	Mars Atmosphere and Volatile EvolutioN

MB	Media Bureau \| Metabolism Branch (changed to LYMB)
MBA STT	Masters of Business Administration - Security Technology Transition
MBC	Office of Missile, Biological, and Chemical Nonproliferation
MBCC	Migratory Bird Conservation Commission
MBDA	Minority Business Development Agency
MBDP	Minority Bank Deposit Program (unable to verify 2/25)
MBES	Medicaid Budget and Expenditure System
MBL	Marine Boundary Layer Reference
MBN	Middle East Broadcasting Networks
MBNMS	Monterey Bay National Marine Sanctuary
MBON	Marine Biodiversity Observation Network
MBR	Electric Market-Based Rates
m-CAFEs	Microbial Community Analysis & Functional Evaluation in Soils
MCB	Division of Molecular and Cellular Biosciences \| Medical Consequences of Drug Abuse and Co-occurring Infections Branch (changed to CMB)
MCBS	Medicare Current Beneficiary Survey \| Midsize and Community Bank Supervision (likely changed to BSE)
MCC	Millennium Challenge Corporation \| Mission Control Center
MCD	Major Construction Division (unable to verify 6/25) \| Medicare Coverage Database \| Monarch Conservation Database

MCDW	Monthly Climatic Data for the World
MCE	My Community Explorer
MCGP	Mouse Cancer Genetics Program
MCH	Maternal and Child Health program
MCHB	Maternal and Child Health Bureau
MCHEP	Maternal and Child Health Epidemiology Program
MCHESP	Maternal and Child Health Epidemiology and Statistics Program (unable to verify 12/21)
MCHESS	Manufacturing Center for Harsh Environment Service Systems (unable to verify 8/23)
MCHIRC	Maternal and Child Health Information Resource Center (changed to MCHESP)
MCI	Mortality in Correctional Institutions \| Museum Conservation Institute
MCIDGB	Metabolic, Cardiovascular and Inflammatory Disease Genomics Branch (page archived 3/25)
MCM	medical countermeasures
MCMP	Medical Countermeasures Program
MCP	Monitoring Country Progress (unable to verify 2/25)
MCPSS	Medical Countermeasures Program Support Services
MCR	Managed Care Reporting
MC-Review	Managed Care Review
MCRMC	Military Compensation and Retirement Modernization Commission (unable to verify 5/16; final report)
MCS	Mathematics and Computer Science Division \| Metadata and Collection Services \| Mineral Commodity Summaries \| Office of Mission and Capability Support
MCSAP	Motor Carrier Safety Assistance Program
MCSD	Marine and Coastal Spatial Data Subcommittee
MCSG	Midwest Center for Structural Genomics
MCTA	Maternity Care Health Professional Target Area
MCTF	Middle Class Task Force (defunct or inactive 1/17, WH transition)

MDA	Maritime Domain Awareness
MDAB	Modeling and Data Assimilation Branch
MDAC	Mortality Disparities in American Communities
MDAT	Microdata Access Tool
MDB	Medications Development Branch \| Multilateral Development Banks \| Mycotic Disease Branch
MDCC	Muscular Dystrophy Coordinating Committee
MDCP	Market Development Cooperator Program
MDCT	Medicaid Data Collection Tool
MDDT	Medical Device Development Tools
MDEP	Mojave Desert Ecosystem Program (unable to verify 5/22)
MDF	Manufacturing Demonstration Facility \| Museum Data Files
M/DGHR	Bureau of Human Resources (changed to GTM)
MDI	Minority Depository Institutions
MDL	Meteorological Development Laboratory
MDM	Mis-, Dis-, Malinformation (unable to verify 2/25)
MDP	Marine Debris Program
MDPP	Medicare Diabetes Prevention Program
MDR	Medical Device Reporting
MDRM	Micro Data Reference Manual
MDRP	Medicaid Drug Rebate Program
MDRS	Mine Data Retrieval System
MDS	Minimum Data Set
MDSCC	Madrid Deep Space Communications Complex
MDT	Microgrid Design Toolkit

MDTB	Medications Discovery & Toxicology Branch
MDTI	Mine Drainage Technology Initiative
ME	Major Events Division
MEA	Office of Energy Diplomacy for the Middle East and Asia
MEaSUREs	Making Earth System Data Records for Use in Research Environments
MEB	Metabolic Epidemiology Branch
MEC	Matter in Extreme Conditions \| Media, Entertainment, and Communications Section
MECS	Manufacturing Energy Consumption Survey
MECT	Medicaid Enterprise Certification Toolkit
MED	Bureau of Medical Services \| Microenterprise Development \| Minority Enterprise Development
MEDCAC	Medicare Evidence Development & Coverage Advisory Committee
M/EDCS	Office of Emergencies in the Diplomatic and Consular Service (unable to verify 2/21)
MedMorph	Making EHR Data More Available for Research and Public Health (unable to verify 4/24)
MedPAC	Medicare Payment Advisory Commission
MedSun	Medical Product Safety Network Reports

MEET	Medicaid Eligibility and Enrollment Toolkit
MEG	Model Evaluation Group
MELI	Monitoring Evaluation Learning and Innovation
MENA-WDI	Middle East and North Africa Workforce Development Initiative
MEP	Hollings Manufacturing Extension Partnership \| Medium Energy Physics \| Migrant Education Program \| Mobility Energy Productivity Tool
MEPAG	Mars Exploration Program Analysis Group
MEPI	U.S.-Middle East Partnership Initiative
MEPS	Medical Expenditure Panel Survey
MEPS-HC	Medical Expenditure Panel Survey-Household Component
MEPS-IC	Medical Expenditure Panel Survey-Insurance Component
MEPS-ICAR	Medical Expenditure Panel Survey-Insurance Component with Administrative Records
MEQC	Medicaid Eligibility Quality Control
MER	Mars Exploration Rovers
MERAS	Mississippi Embayment Regional Aquifer Study
MERF	Materials Engineering Research Facility
MERL	Materials Engineering and Research Lab (unable to verify 11/16)
MERT	Marine Ecosystems Climate Risk Team
MESA	Marine Economy Satellite Account \| Microsystems Engineering, Science and Applications \| Multi-Ethnic Study of Atherosclerosis Air Study (unable to verify 11/21)
MESC	Manufacturing and Energy Supply Chains Office
MeSH	Medical Subject Headings
META	Maritime Environmental and Technical Assistance Program
MetALiCC-MAP	Metals Aquatic Life Criteria and Chemistry Map
METL	Mechanisms Engineering Test Loop
METLab	Mechanical and Environmental Testing Laboratory
MetOp	Meteorological Operational satellite
METRO	Global Change Explorer Multisector Evaluation Tool (unable to verify 1/24)
METS	Message Evaluation and Testing Service \| Metadata Encoding & Transmission Standard
MEWI	Middle East Women's Initiative
MFA	Museums for America program (unable to verify 2/25)
MFC	Materials and Fuels Complex
MFI	Materials Flows through Industry
MFN	Most Favored Nation

MFP	Market Facilitation Program (unable to verify 11/24) \| Minority Fellowship Program \| Money Follows the Person Rebalancing Demonstration program \| Multifactor Productivity
MFPCC	Minority Fellowship Program Coordinating Center
MFRC	Midwest Forensics Resource Center (unable to verify 12/19)
MFRPS	Manufactured Food Regulatory Program Standards
MFTS	Mass Fatality Tracking System
MGB	Medical Genetics Branch
MGC	Molecular Genomics Laboratory Core
MGCRB	Medicare Geographic Classification Review Board
MGG	Marine Geology and Geophysics
MGGD	Marine Geology and Geophysics Division (changed to MGG)
MGH	Maternity Group Homes for Pregnant and Parenting Youth Program
MGI	Materials Genome Initiative
MGL	Making Global Local
MGLS:2017	Middle Grades Longitudinal Study of 2017–18
MGM	Minerals & Geology Management
MGMGB	Medical Genomics and Metabolic Genetics Branch (changed to CPHR)
MGTC	Mobile Gun Test Complex
MHA	Making Homes Affordable
MHAF	Minority HIV/AIDS Fund
MHAT	Mental Health Awareness Training
MHC	Manufactured Home Community Program (unable to verify 2/25)
MHCC	Manufactured Housing Consensus Committee
MH-CLD	Mental Health Client-Level Data
MHLS	Multifamily and Healthcare Loan Sales
MHP	Model Hearing Program
MH RRTPs	Mental Health Residential Rehabilitation and Treatment Programs
MHS	Manufactured Housing Survey \| Manufactured Housing Programs (unable to verify 4/25) \| Military Health System
MHSP	Mental Health Service Professional Demonstration Grants
MIAO	Made in America Office
MIB	Molecular Imaging Branch

MIC	Microscopy and Imaging Core
MICAD	Molecular Imaging and Contrast Agent Database
MicroE4AI	MicroElectronics for Artificial Intelligence
MICrONS	Machine Intelligence from Cortical Networks
MIDAS	Mobile Instrumentation Data Acquisition System \| Modernize and Innovate the Delivery of Agricultural Systems program \| Multi-Timescale Integrated Dynamic and Scheduling
MIDC	Measurement and Instrumentation Data Center
MIDOs	Manufacturing Inspection District Offices (changed to Certificate Management Sections)
MIDS	Master Ionosonde Data Set
MIECHV	Maternal, Infant, and Early Childhood Home Visiting
MIHI	Maternal and Infant Health Initiative
MII	Medicaid Integrity Institute
MILAD	Military Advisor Program
MiMM	Misadventures in Money Management (unable to verify 1/25)
MIMS	Manifest Information Management System \| Multimedia Integrated Modeling System
MINT	Modeling Income in the Near Term
MINX	MISR (Multi-Angle Imaging SpectroRadiometer) INteractive eXplorer
MIPS	Merit-based Incentive Payment System
MIRD	Medical Internal Radiation Dose
MIRE	Model Inventory of Roadway Elements
MIRS	Monthly Interest Rate Survey
MIS	Mineral Industry Surveys \| Molecular Immunoengineering Section
MISE	Maritime Information Sharing Environment (unable to verify 8/18)
MISR	Multi-angle Imaging SpectroRadiometer
MIST	Molecular Information Storage
MITA	Medicaid Information Technology Architecture
MitFLG	Mitigation Framework Leadership Group
MITR	Manufacturing and International Trade Report
MIX	Metadata for Images in XML Schema
MJIEDSP	Multi-Jurisdiction Improvised Explosive Device Security Planning
MK&HFL	Metabolic Kitchen and Human Feeding Lab
MLARS	Money Laundering and Asset Recovery Section

MLN	Medicare Learning Network
MLP+	Medical-Legal Partnerships Plus
MLR	Medical Loss Ratio \| Monthly Labor Review
MLRA	Major Land Resource Area
MLRS	Mineral & Land Records System
MLS	Mass Layoff Statistics
MLTSS	Managed Long Term Services and Supports
MLU	Major Land Uses
MM	Enabling Middle Mile Broadband Infrastructure Program
MMAB	Marine Modeling and Analysis Branch
MMB	Molecular Medicine Branch
MMC	Marine Mammal Commission \| Military Meal Checks
MMCO	Medicare-Medicaid Coordination Office
MMD	Mapping Medicare Disparities \| Mission Management Directorate (unable to verify 4/13)
MMDL	Medicaid Model Data Lab
MMHSRP	Marine Mammal Health and Stranding Response Program
MMIC	Materials Manufacturing Innovation Center
MMIP	Missing or Murdered Indigenous Persons
MMIS	Marine Minerals Information System \| Medicaid Management Information System
MML	Marine Mammal Laboratory \| Material Measurement Laboratory
MMLEADS	Medicare-Medicaid Linked Enrollee Analytic Data Source
MMM	Marine Mammals Management
MMNA	Missing and Murdered Native Americans
MMP	Marine Minerals Program \| Medical Monitoring Project \| Medicare-Medicaid Plan \| Missing Migrant Program \| Molecular Medicine Program (changed to Metals Biology and Molecular Medicine Group, then Molecular Medicine Group) \| Museum Management Program
MMPK	National Mobile Map Package Program
MMRCs	Maternal Mortality Review Committees
MMRIA	Maternal Mortality Review Information Application

MMRR	Medicare & Medicaid Research Review
MMS	Magnetospheric Multiscale \| MEDLARS Management Section (site archived 2/24) \| Minerals Management Service (changed to BOEMRE)
MMTD	Marine Mammal & Turtle Division
MMU	Missing and Murdered Unit
MMUCC	Model Minimum Uniform Crash Criteria
MMWR	Morbidity and Mortality Weekly Report
MMX	Martian Moons eXploration
MND	My NASA Data
MNMS	Monitor National Marine Sanctuary
MNRG	Midwest Natural Resources Group (unable verify 3/15)
MNSA	Office of Multilateral Nuclear and Security Affairs
MOB	Medical Oncology Branch (changed to MOS)
MOC	Marine Operations Center
MoDA	Ministry of Defense Advisors
MODIS	Moderate Resolution Imaging Spectroradiometer
MODS	Metadata Object Description Schema
M-OISPA	Minority Farm Operator Occupational Injury Surveillance of Production Agriculture Survey (page archived)
MOLIS	Minority On-Line Information Service (defunct)
MOLLER	Measurement of a Lepton-Lepton Electroweak Reaction
MONAHRQ	My Own Network, powered by AHRQ (site archived 4/23)
MONet	Molecular Observation Network
MOOSE	Multiphysics Object Oriented Simulation Environment
MOPS	Management and Organizational Practices Survey
MOPS-HP	Management and Organizational Practices Survey—Hospitals
MOS	Medical Oncology Service
MOSAIC	Multidisciplinary Drifting Observatory for the Study of Arctic Climate
MOUD	Medications for Opioid Use Disorder
MOV	Public Safety Officer Medal of Valor
MOVES	MOtor Vehicle Emission Simulator
MOVS	Mobility, Opportunity, and Volatility Statistics
MOXIE	Mars Oxygen In-Situ Resource Utilization Experiment (unable to verify 11/24)

MPA	Marine Protected Areas \| Materials Physics and Applications
MPAD	Missions and Programs Assessment Division
MPA FAC	Marine Protected Areas Federal Advisory Committee
MPC	Materials Preparation Center \| Mobile Passport Control
MPDG	Multimodal Projects Discretionary Grant
MPEP	Model Performance Evaluation Program
MPEX	Material Plasma Exposure eXperiment
MPF	Mars Pathfinder
MPG	Model Programs Guide
MPIDB	Maternal and Pediatric Infectious Disease Branch
MPILP	Meat and Poultry Intermediary Lending Program
mPINC	Maternity Practices in Infant Nutrition and Care
MPN	Master Promissory Note
M-POWER	Multilateral Partnership for Organizing, Worker Empowerment, and Rights Initiative (unable to verify 2/25)
MPP	Migrant Protection Protocols
MPP-Dairy	Margin Protection Program for Dairy Producers (unable to verify 11/24)
MPPEP	Meat and Poultry Processing Expansion Program
MPR	Monthly Progress Reports \| Multifamily Preservation and Revitalization
M/PRI	Office of Management Policy, Rightsizing, and Innovation (changed to M/SS)
MPS	Directorate for Mathematical & Physical Sciences
MQL	Master Question List
MRBI	Mississippi River Basin Healthy Watershed Initiative

MRC	Medical Reserve Corps
MRCC	Midwestern Regional Climate Center
MRCTR	Mapping, Remote-sensing, Cartography, Technology, and Research
MRDS	Mineral Resources Data System
MREID	Multinational Revenue, Employment, and Investment Database
MRGP	Minority Research Grant Program
MRI	Major Research Instrumentation Program \| Minerva Research Initiative (unable to verify 3/25)
MRIP	Marine Recreational Information Program
MRLC	Multi-Resolution Land Characteristics Consortium
MRM	Minerals Revenue Management (changed to ONRR)
MRMS	Multi-Radar/Multi-Sensor System
MRO	Mars Reconnaissance Orbiter
MRP	Mineral Resources Program
MRPBS	Marketing and Regulatory Programs Business Services
MRR	Microenterprise Results Reporting
MRS	Minorities and Retirement Security Program (unable to verify 5/21)
MRSE	Medical Response and Surge Exercise
MRSP	Medical Research Scholars Program
MRTP	Modified Risk Tobacco Products
MRTS	Monthly Retail Trade Survey

MS	Mission Support \| Modeling and Simulation Branch (unable to verify 4/24)
MSA	Metropolitan Statistical Area
MSAP	Magnet Schools Assistance Program
MSB	Mission Support Bureau (changed to MS) \| Money Services Businesses
MSBE	Mountain State Broadband Expressway
MSC	FEMA Flood Map Service Center \| Management Services Center (unable to verify 11/16) \| Maritime Security Center
MSCG	Midwest Center for Structural Genomics
MSD	Materials Science Division, ANL \| Materials Science Division, LLNL \| Mission Support Directorate \| MultiSector Dynamics
MSDS	Material Safety Data Sheets (unable to verify 9/13)
MSE	Materials Science and Engineering Center \| Materials Sciences and Engineering Division
MSEE	Molten Salts in Extreme Environments
MSEIP	Minority Science and Engineering Improvement Program
MSEL	Materials Science and Engineering Library (changed to MML)
MSFC	Marshall Space Flight Center
MSFIDM	Multistate Financial Institution Data Match
MSFWs	Migrant and Seasonal Farmworkers
MSHA	Mine Safety and Health Administration
MSI	Maritime Safety Information \| Medicare Administrative Contractor Satisfaction Indicator (unable to verify 4/21)
MSIP	Minority Serving Institutions Program
MSIS	Medicaid Statistical Information System (changed to T-MSIS)
MS-ISAC	Multi-State Information Sharing and Analysis Center
MSL	Mars Science Laboratory \| Measurement Science Laboratories
MSN	Macromolecular, Supramolecular and Nanochemistry
MSOD	Mobile Source Observation Database
MSP	Higher Education Multicultural Scholars Program \| Maritime Security Program \| Mathematics and Science Partnerships (site archived 11/22) \| Medicare Secondary Payer \| Minerals Security Partnership

MSPB	Merit Systems Protection Board
MSPD	Monthly Statement of the Public Debt
MSPV	Medical Surgical Prime Vendor
MSR	Marine Scientific Research \| Mars Sample Return \| Mid-Session Review (unable to verify 2/25)
MSRP	Montrose Settlements Restoration Program
MSRR	Materials Science Research Rack
MSRS	Monthly State Retail Sales
M/SS	Office of Management Strategy and Solutions
MST	Maritime Security Team (unable to verify 1/25) \| Materials Science and Technology Division
MS-TC	Modeling and Simulation Technology Center
MTAS	Mars Transportation Assessment Study
MTBS	Monitoring Trends in Burn Severity
MTCSWA	Multiplatform Tropical Cyclone Surface Winds Analysis
MT&D	Marine Trash and Debris Program (changed to Marine Debris Program, reverted to MT&D, changed again to Marine Debris Program)
MTDP	Minority Telecommunications Development Program
MTED	Market and Trade Economics Division
MTF	Monitoring the Future Survey
MTI	Mineta Transportation Institute
MTIP	Master Teacher of Invention Education Program (unable to verify 2/25)
MTIS	Manufacturing and Trade Inventories and Sales
MTMDB	Molecular Targets and Medications Discovery Branch
MTMNM	Mariana Trench Marine National Monument
MTO	Moving to Opportunity for Fair Housing Demonstration
MTP	Molecular Targets Platform \| Molecular Targets Program \| NTER Master Trainer Program
MTS	Marine Transportation System \| Model Tribal System \| Monthly Treasury Statement
MTW	Moving to Work (unable to verify 4/25)
Mu2e	Muon-to-Electron-Conversion Experiment
MUA	Medically Underserved Area
MuGSI	Multi-site Gram-negative Surveillance Initiative
MUP	Medically Underserved Population
MUREP	Minority University Research and Education Project
MUSE	Multi-Site Implementation Evaluation of Tribal Home Visiting \| Multi-slit Solar Explorer
MUTCD	Manual on Uniform Traffic Control Devices for Streets and Highways
MVAC	Motor Vehicle Air Conditioning
MVP	Million Veteran Program
MVPS	Message Validation, Processing, and Provisioning System
MVUM	Motor Vehicle Use Map
MWEE	Meaningful Watershed Educational Experiences
MWEPA	Mexican Wolf Experimental Population Area
MWF	My Water's Fluoride
MWL	Mariners Weather Log
MWOBs	Minority and Women Owned Businesses
MWOP	Minority and Women Outreach Program (unable to verify 1/25)
MWTC	Microwave Sounder-based Tropical Cyclone (unable to verify 2/25)
MWTS	Monthly Wholesale Trade Survey
MXP	Import/Export Price Indexes
MyPART	My Pediatric and Adult Rare Tumor network
MYVP	Minority Youth Violence Prevention program (unable to verify 3/25)