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

M2M	Mark-to-Market (older link archive)
M3	Manufacturers' Shipments, Inventories, and Orders Survey \| Modernization and Migration Management
M3UFO	Manufacturers' Unfilled Orders Survey (older link archive)
MAC	Market Access and Compliance (unable to verify 1/20)
MACBIS	Medicaid and CHIP Business Information System
MACOSH	Maritime Advisory Committee for Occupational Safety and Health (older link archive; archive2)
MACPAC	Medicaid and CHIP Payment and Access Commission
MACPro	Medicaid and CHIP Program
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 (older link archive)
MAIRS	Monsoon Asia Integrated Regional Study (unable to verify 8/17)
MAL	Marketing Assistance Loans
MAML	Metal Additive Manufacturing Laboratory

MAP	Market Access Program \| Risk Mapping, Assessment and Planning (changed to Risk MAP) \| Museum Assessment Program
MAPP	Modeling, Analysis, Predictions, and Projections (older link archive; archive2)
MAPS	Mapping and Analysis for Public Safety (unable to verify 10/19) \| Mass Attacks in Public Spaces \| Mobile Applications for Public Safety (older link archive; archive2) \| Monitoring Avian Productivity and Survivorship
MARAD	Maritime Administration (older link archive)
MARC	Machine-Readable Cataloging
MARI	Minority HIV/AIDS Research Initiative (unable to verify 6/22)
MARINe	Multi-Agency Rocky Intertidal Network (older link archive)
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 (older link archive)
MASCD	Mission Assurance Standards and Capabilities Division
MASS	Management Assessment Subsystem
MAST	Marriage Strengthening Research and Dissemination Center \| Mission Accountability Support Tracker
MAT	Medication-Assisted Treatment (unable to verify 1/23)
MATCH	Medications at Transitions and Clinical Handoffs (older link archive) \| Metadata Access Tool for Climate and Health (discontinued 6/18; archive)
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 (.pdf)
MATS	Mercury and Air Toxics Standards
MAUDE	Manufacturer and User Facility Device Experience
MAVEN	Mars Atmosphere and Volatile EvolutioN

MB	Media Bureau (older link archive) \| Metabolism Branch (changed to LYMB)
MBA STT	Masters of Business Administration - Security Technology Transition
MBC	Office of Missile, Biological, and Chemical Nonproliferation (older link archive; archive2)
MBCC	Migratory Bird Conservation Commission (older link archive)
MBDA	Minority Business Development Agency
MBDP	Minority Bank Deposit Program (older link archive)
MBES	Medicaid Budget and Expenditure System
MBN	Middle East Broadcasting Networks
MBON	Marine Biodiversity Observation Network (older link archive)
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 (older link archive; archive2) \| Midsize and Community Bank Supervision
MCC	Millennium Challenge Corporation
MCD	Medicare Coverage Database (older link archive; archive2) \| Monarch Conservation Database (older link archive)

MCDW	Monthly Climatic Data for the World
MCE	My Community Explorer
MCGP	Mouse Cancer Genetics Program
MCH	Maternal and Child Health program (older link archive)
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)
MCHIRC	Maternal and Child Health Information Resource Center (changed to MCHESP)
MCI	Mortality in Correctional Institutions (older link archive)
MCIDGB	Metabolic, Cardiovascular and Inflammatory Disease Genomics Branch (older link archive)
MCMP	Medical Countermeasures Program
MCP	Monitoring Country Progress (older link archive)
MCPSS	Medical Countermeasures Program Support Services
MCR	Managed Care Reporting
MCRMC	Military Compensation and Retirement Modernization Commission (unable to verify 5/16; final report)
MCS	Mathematics and Computer Science Division (older link archive) \| Mineral Commodity Summaries (older link archive; archive2) \| 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
MCTF	Middle Class Task Force (defunct or inactive 1/17, WH transition)

MDA	Maritime Domain Awareness
MDAC	Mortality Disparities in American Communities
MDAT	Microdata Access Tool
MDB	Medications Development Branch \| Multilateral Development Banks (older link archive) \| Mycotic Disease Branch
MDCC	Muscular Dystrophy Coordinating Committee
MDCP	Market Development Cooperator Program
MDCT	Medicaid Data Collection Tool
MDEP	Mojave Desert Ecosystem Program (unable to verify 5/22)
MDF	Manufacturing Demonstration Facility (older link archive)
M/DGHR	Bureau of Human Resources (changed to GTM; older link archive)
MDI	Minority Depository Institutions
MDL	Meteorological Development Laboratory
MDM	Mis-, Dis-, Malinformation
MDP	Marine Debris Program
MDPP	Medicare Diabetes Prevention Program
MDR	Medical Device Reporting (older link archive)
MDRP	Medicaid Drug Rebate Program
MDRS	Mine Data Retrieval System (older link archive; archive2)
MDS	Minimum Data Set
MDSCC	Madrid Deep Space Communications Complex (older link archive)
MDT	Microgrid Design Toolkit

MDTB	Medications Discovery & Toxicology Branch (older link archive; archive2)
MDTI	Mine Drainage Technology Initiative (older link archive)
MEaSUREs	Making Earth System Data Records for Use in Research Environments
MEB	Metabolic Epidemiology Branch (older link archive)
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 (older link archive) \| Microenterprise Development (older link archive) \| 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; older link archive)
MedMorph	Making EHR Data More Available for Research and Public Health (older link archive)
MedPAC	Medicare Payment Advisory Commission

MEET	Medicaid Eligibility and Enrollment Toolkit
MEG	Model Evaluation Group
MEP	Hollings Manufacturing Extension Partnership \| Medium Energy Physics \| Migrant Education Program
MEPAG	Mars Exploration Program Analysis Group
MEPI	U.S.-Middle East Partnership Initiative
MEPS	Medical Expenditure Panel Survey
MEPS-IC	Medical Expenditure Panel Survey-Insurance Component
MEPS-ICAR	Medical Expenditure Panel Survey-Insurance Component with Administrative Records
MEQC	Medicaid Eligibility Quality Control
MERAS	Mississippi Embayment Regional Aquifer Study
MERF	Materials Engineering Research Facility (older link archive)
MERL	Materials Engineering and Research Lab (unable to verify 11/16)
MERT	Marine Ecosystems Climate Risk Team (older link archive)
MESA	Marine Economy Satellite Account \| Multi-Ethnic Study of Atherosclerosis Air Study (unable to verify 11/21)
MESC	Manufacturing and Energy Supply Chains Office
MeSH	Medical Subject Headings
METL	Mechanisms Engineering Test Loop
METLab	Mechanical and Environmental Testing Laboratory
MetOp	Meteorological Operational satellite
METRO	Global Change Explorer Multisector Evaluation Tool
METS	Message Evaluation and Testing Service \| Metadata Encoding & Transmission Standard
MFA	Museums for America program

MFP	Market Facilitation Program (older link archive; archive2) \| Minority Fellowship Program \| Money Follows the Person Rebalancing Demonstration program (older link archive; archive2) \| Multifactor Productivity (older link archive)
MFRC	Midwest Forensics Resource Center (unable to verify 12/19)
MGB	Medical Genetics Branch (older link archive)
MGC	Molecular Genomics Laboratory Core
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
MGLS:2017	Middle Grades Longitudinal Study of 2017–18
MGM	Minerals & Geology Management (older link archive; archive2)
MGMGB	Medical Genomics and Metabolic Genetics Branch (changed to CPHR; older link archive)
MHA	Making Homes Affordable (older link archive)
MHAF	Minority HIV/AIDS Fund
MH-CLD	Mental Health Client-Level Data (older link archive)
MHLS	Multifamily and Healthcare Loan Sales
MH RRTPs	Mental Health Residential Rehabilitation and Treatment Programs
MHS	Manufactured Housing Survey \| Manufactured Housing Programs \| 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	Modernize and Innovate the Delivery of Agricultural Systems program
MIDC	Measurement and Instrumentation Data Center
MIDOs	Manufacturing Inspection District Offices
MIECHV	Maternal, Infant, and Early Childhood Home Visiting
MIHI	Maternal and Infant Health Initiative
MII	Medicaid Integrity Institute
MiMM	Misadventures in Money Management
MIPS	Merit-based Incentive Payment System (older link archive)
MIRE	Model Inventory of Roadway Elements (older link archive; archive2)
MIRS	Monthly Interest Rate Survey
MIS	Mineral Industry Surveys (older link archive; archive2)
MISE	Maritime Information Sharing Environment (unable to verify 8/18)
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 (older link archive)
MK&HFL	Metabolic Kitchen and Human Feeding Lab
MLARS	Money Laundering and Asset Recovery Section

MLN	Medicare Learning Network (older link archive; archive2)
MLR	Medical Loss Ratio \| Monthly Labor Review
MLRA	Major Land Resource Area (older link archive)
MLRS	Mineral & Land Records System (currently offline; older link archive)
MLS	Mass Layoff Statistics
MLTSS	Managed Long Term Services and Supports
MLU	Major Land Uses
MMAB	Marine Modeling and Analysis Branch
MMB	Molecular Medicine Branch (older link archive)
MMC	Marine Mammal Commission
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 (older link archive)
MMIC	Materials Manufacturing Innovation Center
MMIP	Missing or Murdered Indigenous Persons
MMIS	Marine Minerals Information System \| Medicaid Management Information System
MML	Marine Mammal Laboratory (older link archive) \| Material Measurement Laboratory
MMM	Marine Mammals Management (older link archive; archive2; archive3)
MMNA	Missing and Murdered Native Americans
MMP	Marine Minerals Program \| Medical Monitoring Project \| Missing Migrant Program \| Molecular Medicine Program (changed to Metals Biology and Molecular Medicine Group, then Molecular Medicine Group) \| Museum Management Program
MMRIA	Maternal Mortality Review Information Application

MMRR	Medicare & Medicaid Research Review
MMS	MEDLARS Management Section \| Minerals Management Service (changed to BOEMRE)
MMTD	Marine Mammal & Turtle Division (older link archive)
MMU	Missing and Murdered Unit
MMUCC	Model Minimum Uniform Crash Criteria
MMWR	Morbidity and Mortality Weekly Report
MNMS	Monitor National Marine Sanctuary
MNRG	Midwest Natural Resources Group (unable verify 3/15)
MNSA	Office of Multilateral Nuclear and Security Affairs (older link archive; archive2)
MOB	Medical Oncology Branch (changed to MOS)
MOC	Marine Operations Center
MoDA	Ministry of Defense Advisors (older link archive)
MODIS	Moderate Resolution Imaging Spectroradiometer
MODS	Metadata Object Description Schema
M-OISPA	Minority Farm Operator Occupational Injury Surveillance of Production Agriculture Survey
MOLIS	Minority On-Line Information Service (defunct)
MOLLER	Measurement of a Lepton-Lepton Electroweak Reaction
MONAHRQ	My Own Network, powered by AHRQ
MOOSE	Multiphysics Object Oriented Simulation Environment
MOPS	Management and Organizational Practices Survey (older link archive)
MOS	Medical Oncology Service
MOSAIC	Multidisciplinary Drifting Observatory for the Study of Arctic Climate
MOV	Public Safety Officer Medal of Valor (older link archive; archive2)
MOVES	MOtor Vehicle Emission Simulator

MPA	Marine Protected Areas
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
MPEX	Material Plasma Exposure eXperiment
MPF	Mars Pathfinder (older link archive)
MPG	Model Programs Guide (older link archive)
MPIDB	Maternal and Pediatric Infectious Disease Branch
MPN	Master Promissory Note
M-POWER	Multilateral Partnership for Organizing, Worker Empowerment, and Rights Initiative
MPP	Migrant Protection Protocols (site archived 11/22; older link archive; archive2)
MPP-Dairy	Margin Protection Program for Dairy Producers
MPPEP	Meat and Poultry Processing Expansion Program
M/PRI	Office of Management Policy, Rightsizing, and Innovation (changed to M/SS; older link archive)
MPS	Directorate for Mathematical & Physical Sciences
MQL	Master Question List
MRBI	Mississippi River Basin Healthy Watershed Initiative

MRC	Medical Reserve Corps (older link archive)
MRCTR	Mapping, Remote-sensing, Cartography, Technology, and Research (older link archive; archive2; archive3)
MRDS	Mineral Resources Data System
MRI	Major Research Instrumentation Program (older link archive)
MRIP	Marine Recreational Information Program (older link archive)
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 (older link archive; archive2)
MRPBS	Marketing and Regulatory Programs Business Services
MRR	Microenterprise Results Reporting (older link archive)
MRS	Minorities and Retirement Security Program (unable to verify 5/21)
MRSP	Medical Research Scholars Program (older link archive; archive2)
MRTP	Modified Risk Tobacco Products (older link archive)
MRTS	Monthly Retail Trade Survey

MS	Mission Support (older link archive)
MSA	Metropolitan Statistical Area (older link archive)
MSAP	Magnet Schools Assistance Program
MSB	Mission Support Bureau (changed to MS) \| Money Services Businesses
MSBE	Mountain State Broadband Expressway (older link archive)
MSC	FEMA Flood Map Service Center (older link archive) \| Management Services Center (unable to verify 11/16) \| Maritime Security Center
MSCG	Midwest Center for Structural Genomics (older link archive)
MSD	Materials Science Division, ANL (older link archive) \| Materials Science Division, LLNL (older link archive) \| Mission Support Directorate
MSDS	Material Safety Data Sheets (unable to verify 9/13)
MSE	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)
MSFIDM	Multistate Financial Institution Data Match
MSFWs	Migrant and Seasonal Farmworkers (earlier link archive; archive2)
MSHA	Mine Safety and Health Administration
MSI	Medicare Administrative Contractor Satisfaction Indicator (unable to verify 4/21)
MSIP	Minority Serving Institutions Program (older link archive)
MSIS	Medicaid Statistical Information System (changed to T-MSIS)
MSN	Macromolecular, Supramolecular and Nanochemistry
MSP	Higher Education Multicultural Scholars Program (older link archive) \| Maritime Security Program (older link archive) \| Mathematics and Science Partnerships (site archived 11/22; older link archive) \| Medicare Secondary Payer

MSPB	Merit Systems Protection Board
MSPD	Monthly Statement of the Public Debt (older link archive)
MSR	Marine Scientific Research \| Mid-Session Review
MSRP	Montrose Settlements Restoration Program
MSRS	Monthly State Retail Sales
M/SS	Office of Management Strategy and Solutions
MST	Maritime Security Team \| Materials Science and Technology Division (older link archive)
MS-TC	Modeling and Simulation Technology Center
MTBS	Monitoring Trends in Burn Severity
MT&D	Marine Trash and Debris Program (changed to Marine Debris Program; older link archive)
MTDP	Minority Telecommunications Development Program
MTED	Market and Trade Economics Division
MTF	Monitoring the Future Survey (older link archive; archive2)
MTI	Mineta Transportation Institute
MTIP	Master Teacher of Invention Education Program
MTIS	Manufacturing and Trade Inventories and Sales
MTMDB	Molecular Targets and Medications Discovery Branch
MTO	Moving to Opportunity for Fair Housing Demonstration
MTP	Molecular Targets Platform \| Molecular Targets Program \| NTER Master Trainer Program (older link archive)
MTS	Marine Transportation System (older link archive) \| Model Tribal System \| Monthly Treasury Statement (older link archive)
MTW	Moving to Work (older link archive)
Mu2e	Muon-to-Electron-Conversion Experiment
MuGSI	Multi-site Gram-negative Surveillance Initiative
MUREP	Minority University Research and Education Project
MUSE	Multi-Site Implementation Evaluation of Tribal Home Visiting (older link archive)
MVP	Million Veteran Program
MVPS	Message Validation, Processing, and Provisioning System
MWEE	Meaningful Watershed Educational Experiences
MWEPA	Mexican Wolf Experimental Population Area (older link archive; archive2)
MWF	My Water's Fluoride
MWL	Mariners Weather Log
MWOBs	Minority and Women Owned Businesses
MWTS	Monthly Wholesale Trade Survey
MXP	Import/Export Price Indexes
MyPART	My Pediatric and Adult Rare Tumor network