Acronyms & Abbreviations

The definition of MARS is:

Machine Retrieval System

Machine-Assisted Reference Section

Magnetic Airborne Recording System

Magnetic anchor retinal stimulation

Magnetic Array Sensor

Maintenance Activity Reporting and Scheduling

Maintenance And Reprogramming System

Man-hour Accounting and Reporting System

Management Accounting Reporting System

Management Action Reporting System

Management Administration Reporting Subsystem

Management Analysis and Reporting System

Management Analysis Reporting Service

Management Analysis Reporting System

Management and Accounting Reporting System

Management and Administrative Reporting System

Management and Reporting Subsystem

Manned Aerodynamic Reusable Spaceship

Manned Astronautical Research Station

Manned Astronomical Research Station

Manpower Accountability Reporting System

Manual Accounting Replacement System

Marconi Automatic Relay System

Marine Aircraft Repair Squadron

Marine Amphibious Reconnaissance System

Marine Research Stations network

Marker Assisted Recurrent Selection

Market Analysis Research System

Mars Radio Science Experiment

Martin Automatic Reporting System

Martin Autopmatic Reporting System

Maryland Automated Registration System

Materials Analysis Research Station

Materials at risk survey

Math And Reading Scholars

Mathematics Assessment Resource Service

Matrix Amplifier and Routing System

Matrix Associated Regions

Matrix association regions

Matrix attachment regions

Matrix-attached regions

MCC Automated Reconfiguration System

Media And Resource Services

Medical Air Rescue Service

Medical Air Rescue Services

Medical archival system

Medical Article Record System

Medicare Accounts Receivable System

Medication Administration Records

Medium Altitude Reconnaissance System

Member of the Association of Railway Surgeons

Membrane aerobic reactor system

Membrane anaerobic reactor system

MEMORY ADDRESS REGISTER STORAGE

Message Archiving and Retrieval Service

Metal artifact reduction sequence

Mevinolin Atherosclerosis Regression Study

Michigan Assistance and Referral Service

Mid-air Recovery System

Mid-Air Refueling Squadron

Mid-air retrieval system

Middleware and Related Services

Military Affiliate Radio System

Military Affiliated Radio Service

Military Affiliated Radio System

Military Alert Radio System

Military Amateur Radio Service

Military Amateur Radio System

Mirror advanced reactor study

Mission to America's Remarkable Students

Missouri Automated Radiology System

Mitigation and Adaption Research Strategies

Mobile Analytical Reconnaissance System

Mobile Asset Repair Station

Mobile Atlantic Range Station

Mobile Autonomous Robot Software

Mobile Avian Radar System

Modeling With Automated Regression Tools

Modular Adaptable Radar Simulator

Modular Airborne Recorder System

Module autonomous robotics system

Molecular adsorbent recirculating system

Molecular adsorbent recycling system

Molecular adsorbents recirculating system

Monitored Atherosclerosis Regression Study

Monitoring Action Research System

Monitoring Agriculture with Remote Sensing

Monterey Accelerated Research System

Monthly Aerial Reconnaissance Summary

Mountain Area Research Section

Muenster Aging and Retina Study

Multi-Access Retrieval System

Multi-Aperture Radar System

Multi-Aperture Reluctance Switch

Multi-purpose Aiming Reflex Sight

Multi-spectral Agile Reconnaissance System

Multicast Address Resolution Server

Multicast address resolution service

Multimedia Audiovisual Retrieval Service

Multimediales Auskunfts- and Recherche-System

Multiple Accelerometer Rate Sensor

Multiple application reservoir simulator

Multiple artillery rocket system

Multiple-band Avionics Radar Suite

Multipurpose Access Remote Server

Multipurpose Aiming Reflex Sight

Multiuser Archival and Retrieval System

Multivariate adaptive regression spline

Multivariate adaptive regression splines

Multiwarfare Assessment and Research System