New York Miscellaneous Reports - A publication (DLA)
Manned Spacecraft Center - NASA (NAKS)
Master Sequence Controller (NAKS)
Materials Service Center (NAKS)
Military Sealift Command (NAKS)
Millisecond (WGA)
Missionaries of the Sacred Heart (TOCD)
Missionary Servants of Christ (TOCD)
Moding Sequencing and Control (NAKS)
Chief Mess Management Specialist - Formerly, CSC, CST, SDC - Navy rating
College de St.-Boniface, Manitoba - Library symbol - National Library of Canada (NLC)
Congregation of the Marianites of the Holy Cross (TOCD)
Congregation of the Sisters Marianites of Holy Cross - Roman Catholic religious order
- The MacNeal-Schwendler Corp.
Macro Selection Compiler - Computer science (BUR)
Madras Staff Corps - British
Magnetically Settable Counter
Magnetic Surface Current
Magnitude Square of the Complex Coherence (PDAA)
Maharashtra Socialist Congress - India - Political party (PPW)
Mailstop Code
Maine Sardine Council (EA)
Main Storage Control - Computer science (BUR)
Main Switching Centre - Telecommunications (NITA)
Maintenance Support Center (MCD)
Maisach - Federal Republic of Germany - Geomagnetic observatory code
Major Subcontract (MCD)
Major Subordinate Command - Military
Major Subordinate Commander (SAUS)
Malaysian Multimedia Super Corridor
Management Sectional Center
Management Service Center - Marine science
Management Services Contractor - INTELSAT
Manchester Ship Canal
Mandatory Settlement Conference - Insurance
Mandatum sine Clausula - Authority without Restriction - Latin
Mankato State College - Later, Mankato State University - Minnesota
Manned Spacecraft (ACAE)
Manned Spacecraft Center - Later, Johnson Space Center - NASA
Manpower Services Commission - British
Manset Marine Supply - NCIC boat manufacturer code (NCIC)
Manset Marine Supply, Rockland, ME - Manufacturer code for watercraft hull identification number (USCG)
Maple Syrup Council (EA)
Mapping Science Committee - National Research Council (GIS)
Map Society of California - A non-profit public benefit corporation (GIS)
Marine Safety Committee (SAUS)
Marine Safety Council - Coast Guard
Marine Science Center - Oregon State University - Research center (RCD)
Marine Science Council - Marine science (MSC)
Marine Stewardship Council
Marital Status Code - IRS
Maritime Safety Committee - Advisory Committee on Pollution of the Sea
Maritime Service Committee - New York, NY (EA)
Maritime Surveillance Capability (CCCA)
Marketing Services Conference - LIMRA
Marquise - Marchioness - French (ROG)
Marrow Stromal Cell - Biochemistry
Marshwood - NCIC firearms make code (NCIC)
Maryland State College - Merged with University of Maryland
Massachusetts Safety Council
Mass Storage Control - Computer science (BUR)
Mass Storage Controller (NITA)
Master of Science in Commerce (DD)
Master of Science in Communication (PGP)
Master of Science in Counseling
Master of Speech Communication
Master Sequence Controller (NASA)
Master Status Chart
Materials and Process Simulation Center - Research center (RCD)
Material Sciences - NYSE symbol
Material Sciences Corp. - NYSE symbol (SPSG)
Material Source Code
Materials Science Center - Cornell University
Materials Service Center - NASA (NASA)
Materiel Screening Code - DoD (AFIT)
Materiel Status Committee - Military (AABC)
Materiel Support Center (MCD)
Materiel Support Command (MCD)
Mathematics, Science, and Computer - Education
Mathematics/Science/Computer
Mean Spherical Candlepower - Computer science (IAA)
Mechanical Super-Calendered Paper (DGA)
Media Stimulated Calling - A telecommunications service (XSAL)
Media Stream Container - A data file (TELEC)
Medical Service Commission - Canada
Medical Service Corps - Military
Medical Social Coordinator
Medical Specialist Corps - Military
Medical Staff Corps - British
Mediterranean Society of Chemotherapy (EAIO)
Mediterranean Sub-Commission - Silva Mediterranea - FAO
Medium-Scale Computer (IAA)
Memory Storage Control - Computer science
Memphis Service Center - IRS
Meritorious Service Cross - Canada (FOTI)
Mesa - Arizona - Airport symbol - Obsolete (OAG)
Mesenchymal Stem Cell
Mesitylenesulfonyl Chloride - Biochemistry
Message Sequence Chart - Telecommunications (TEL)
Message Switching Center - Telecommunications
Message Switching Computer - Telecommunications (TEL)
Message Switching Concentration
Metal Shielded Cabinet
Meteorological Satellite Center - Aerospace (IAA)
Meteorological Service of Canada (SSEC)
Methane Sulfonyl Chloride - Organic chemistry
Metric System - Conversion (NATG)
Metropolitan Special Constabulary (ODA)
Metropolitan State College - Denver, CO
Microgravity Smoldering Combustion Experiment (SAUS)
Micronesia Support Committee - Later, MC (EA)
Microscale Cloud - Module - Air Force
MicroSoft C-compiler - A windows-based compiler
Microsystems Centre (NITA)
Microwave Semiconductors Corporation (ACAE)
Microwave Stripline-Circuit (PDAA)
Mid-South Conference (PSS)
Midwestern Simulation Council
Migent Software - Vancouver Stock Exchange symbol
Mile of Standard Cable
Milestone Schedule Charts (MCD)
Military Scout Car - British
Military Sealift Command - Formerly, MSTS, NTS - Navy (NOAA)
Military Staff Committee - United Nations (DLA)
Military Studies Center (EA)
Milliwatts per Square Centimeter
Minesweeper, Coastal - Nonmagnetic - Navy symbol
Minor Suma Corp. - Kansas City, MO (TSSD)
Mirror Sign Convention
Mirror Streak Camera
Miscellaneous (ADA)
Missile and Space Council - Defunct (AAG)
Missile Sequence Charts (AAG)
Missile Support Co. - Army
Missile System Checkout (AAG)
Missionaries of the Sacred Heart (TOCD)
Missionarii Sacratissimi Cordis - Missionaries of the Most Sacred Heart - Roman Catholic men's religious order
Missionarii Sancti Caroli - Missionaries of St. Charles - Roman Catholic men's religious order
Missionary Sisters of the Most Sacred Heart of Jesus - Roman Catholic religious order
Missionary Sisters of the Most Sacred Heart of Jesus of Hiltrup (TOCD)
Missionary Sisters of the Sacred Heart - Cabrini Sisters - Roman Catholic religious order
Mission Specialist Club - Aerospace
Mississippi Central R. R. - AAR code
Mississippi Southern College
Mixing Smoke Chamber (MCD)
Mobile-Service switching Centre
Mobile Servicing Center - Canada
Mobile Switching Center
Mode Selector Controller (MCD)
Modified Stirling Cycle (ACAE)
Moding Sequencing and Control (MCD)
Modular Spacecraft Computer (ACAE)
Monitor Sugar - Federal Railroad Administration identification code
Mono-Stereo Compatible (PDAA)
Montana State College (MCD)
Moorhead State College - Minnesota
Morgan State College - Later, Morgan State University - Baltimore, MD
Morpheme Structure Constraint - Linguistics (IEL)
Moscow Airways - Russian Federation - ICAO designator (FAAC)
Most Significant Character - Computer science (MDG)
Motor Speed Changer (IAA)
Motor Speed Control
Motor Starting Contractor
Motor Submersible Canoe - British Marines' Special Forces - World War II
Mountain Safety Council (SAUS)
Moved, Seconded, and Carried
Mulch and Soil Council (EA)
Multimedia Super Corridor - Proposed, Malaysia
Multiple Scan Correlator
Multiple Spindle Chucker
Multiple Systems Coupling - Computer science
Multipotential Stem Cells - Hematology
Multi-Sensor Correlation (XSAL)
Multisensor Correlator (CAAL)
Multiservice Center
Multistrip Coupler - Telecommunications (TEL)
Multisystem Coupling - Computer science
Murray State College - Later, MSU - Kentucky
Museum Support Center - Smithsonian Institution
Muskingum College, New Concord, OH - OCLC symbol (OCLC)
Sankaran Maninka - Language code (ETLW)
Social Christian Movement (Ecuador) - Political party (PSAP)
Springfield College, Springfield, MA - Library symbol - Library of Congress (LCLS)
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