MLVSS—Mixed Liquor Volatile Suspended Solids
MM—Methyl Mercaptan
MMA—Methyl Methacrylate
MMC—Monopolies and Mergers Commission (UK)
MMH—Monoethyl Hydrazine
MMR—Material Morbidity Rate
MMR—Maternal Mortality Rate
MMT—Methylcyclopentadienyl Manganese Tricarbonyl
MoA—Ministry of Agriculture
MoD—Ministry of Defense (UK)
MOEE—Ministry of Environment and Energy (Canada)
MoEF—Ministry of Environment and Forests (India)
MONICA—Monitoring of Trends and Determinants in
Cardiovascular Disease
MOX—Mixed Oxide
MPD—Maximum Permissible Dose
MPE—Maximum Permissible Exposure
MPN—Most Probable Number
MPP—Macroporous Polymer
MPPE—Macroporous Polymer Extraction
mppcf—Millions of Particles per Cubic Foot
MPRSA—Marine Protection, Research and Sanctuaries
Act (Ocean Dumping Act) (U.S.)
MR—Magnetic Resonance
MR—Mass Removal
MRC—Medical Research Council (UK)
MRDL—Maximum Residual Disinfectant Level
MRDLG—Maximum Residual Disinfectant Level Goal
MRF—Material Recovery Facilities
MRF—Municipal Recycling Facilities
MRI—Mean Recurrence Interval
MRS—Monitored Retrievable Storage
MS—Management System
MS—Mass Spectrometry
MSAT—Mobile Source Air Toxics
MSDS—Material Safety Data Sheets (U.S.)
MSE—Mean Square Estimate
MSG—Monosodium Glutamate
MSHA—Mine Safety and Health Administration (U.S.)
MSL—Mean Sea Level
MSMR—Mean Standardized Mortality Rate
MSS—Multispectral Scanner
MSW—Municipal Solid Waste
MSY—Maximum Sustainable Yield
m.t.—Metric Ton
Mta –1 —Million Tons per Year (Annum)
MTB—Multiply Twinned Particles
MTBE—Methyl Tert-Butyl Ether
MTBF—Mean Time between Failures
MtCeq—Million Tons Carbon Equivalent
MTD—Maximum Tolerable Dose
MTHF—Methyltetrahydrofuran
MTI—Mixture Toxicity Index
Mtoe—Million Tons Oil Equivalent
mtoe—Million Tonnes Oil Equivalent
MVC—Mechanical Vapor Compression
MW—Megawatt
MWCO—Molecular Weigh CutoffMWT—Multiple Well Tracer TestN—Newton
NA—Nutrient Agar
NAA—Neutron Activation Analysis
NAAQS—National Ambient Air Quality Standards (U.S.)
NACA—National Agricultural Chemicals Association (U.S.)
NADH—Nicotinamide Adenine Dinucleotide
NAD—Nitric Acid Dihydrate
NADP/NTN—National Atmospheric Deposition Program/
National Trends Network
NADW—North Atlantic Deep Water
NAE—National Academy of Engineering (U.S.)
NAFO—North Atlantic Fisheries Organization
NAFTA—North American Free Trade Agreement
Nagra—Waste Disposal Organization (Switzerland)
Naics—North American Industry Classification System
NaNp—Sodium Napthalenide
NAO—National Audit Office (UK)
NAO—North Atlantic Oscillation
NAPAG—National Academics Policy Advisory Group (UK)
NAPAP—National Acid Precipitation Assessment Program
(U.S.)
NAPCA—National Air Pollution Control Administration
(U.S.)
NaPEG—Sodium Polyethylene Glycol
NAPL—Non-Aqueous Phase Liquid
NAS—National Academy of Sciences (U.S.)
NAS—National Audubon Society
NAST—National Assessment Synthesis Team
NASA—National Aeronautics and Space Administration
(U.S.)
NAST—National Assessment Synthesis Team (U.S.)
NAT—Nitric Acid Trihydrate
NB—Nitrobenzene
NB—Nutrient Broth
NBOD—Nitrogenous Biochemical Oxygen Demand
NBS—National Bureau of Standards (U.S.)
NC—Number Concentration
NCAB—National Cancer Advisory Board (U.S.)
NCAR—National Center for Atmospheric Research (U.S.)
NCB—National Coal Board (UK)
NCC—Nature Conservancy Council (UK)
NCDC—National Climate Data Center
NCEA—National Center for Environmental Assessment
(U.S.)
NCEES—National Council of Examiners for Engineers and
Surveyors (U.S.)
NCEJN—North Carolina Environmental Justice Network
NCEP—National Centers for Environmental Prediction
(U.S.)
NCHGR—National Center for Human Genome Research
(U.S.)
NCHS—National Center for Health Statistics (U.S.)
NCI—National Cancer Institute (U.S.)
NCI-MS—Negative Chemical Ionization–Mass
Spectrometry
NCP—National Contingency Plan (U.S.)1364 ACRONYMS AND ABBREVIATIONS
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