NA North America or North American
NA Notice of Allowance (Patents)
NAA N-Acetylaspartate
NAA Naphthalene Acetic Acid
nAChR Nicotinic Acetyl Choline Receptor
NAD Nicotinamide Adenine Dinucleotide
NAD Non Aq. Dispersion
NADA New Animal Drug Application
NADH Nicotinamide Adenine Dinucleotide Hydrogenated.
NAE NEDD8-Activating Enzyme
NAF Neuronal Attachment Factor
NAION Non-arteritic Anterior Ischemic Optic Neuropathy
NAIST NAra Institute of Science & Technology (Japan)
NAMPRT NicotinAMide PhosphoRibosyl Transferase (Oncology)
NAO Normal Alpha Olefin
NAP Nematode Anticoagulant Protein
NARI Nor Adrenaline Reuptake Inhibitors
NAS N Acetyl Serotonin
NASA National Aeronautics & Space Administration (USA Government)
NASBA Nucleic Acid Sequence Base Amplification
NASH Non Alcoholic Steato Hepatitis
NAT Nucleic Acid Tests
NATA National-scale Air Toxics Assessment (USA - EPA)
NATO North Atlantic Treaty Organization
NBC Niacin Bound Chromium
NBE New Biological Entities
NBI Narrow Band Imaging
NBR Nitrile Butadiene Rubber
NCA N (nitrogen) Carboxy Anhydride
NCA Non Coordinating Anion
NCAUR National Center for Agricultural Utilization Research (USDA)
NCBI National Center for Biotechnology Information (U.S.A. Government)
NCCN National Comprehensive Cancer Network
NCE New Chemical Entity
NCG non-condensable gas
NCI National Cancer Institute (USA)
NCL Neutrophil Chemotactic Lymphokine
NCMC NIST (Abbrev.) Combinatorial Methods Center
NCP Non Cancer Pain
NCT N-Chloro Taurine
Nd-PBR Neodymium Poly Butadiene Rubber
NDA Naphthalene Dicarboxylic Acid
NDA New Drug Application (FDA)
NDGA Nor Dihydro Guaiaretic Acid
NDO Neurogenic Detrusor Overactivity
NDPA Nitro Di Phenyl Amine
NDPK Nucleoside Di Phosphate Kinase
NDRI Norepinephrine & Dopamine Reuptake Inhibitors
NDT non destructive testing
NE Neutrophil Elastase
NE Netherlands
NEC National Economic Council (USA)
NECAR New Electric CAR
NED No Evidence of Disease
NEI Neutrophil Elastase Inhibitor
NEI Nuclear Export Inhibitors
NEJM New England Journal of Medicine
NEMS Nano Electro Mechanical Systems
NER Nucleotide Excision Repair (Oncology)
NES Normal Epithelial Specific protein
NET Neuro Endocrine Tumors
NEXAFS Near Edge X-ray Absorption Fine Structure
NF Nitro Furazone (Antibiotics)
NFPA National Food Processors Association (USA)
NG Non Generic
NGAL Neutrophil Gelatinase-Associated Lipocalin
NGF Nerve Growth Factor
NGS next generation sequencing
NHC N Heterocyclic Carbene
NHGRI National Human Genome Research Institute (USA - NIH)
NHL Non Hodgkins Lymphoma
NHMFL National High Magnetic Field Laboratory
NHPI N-Hydroxy Phthal Imide
NHS N-Hydroxyl Sulfosuccinimide
NIAID National Institute of Allergy & Infectious Diseases (NIH; USA)
NIAMS National Institute of Arthritis & Musculoskeletal & Skin (USA - NIH)
NIBIB National Institute of Biomedical Imaging & Bioengineering (USA - NIH)
NIBR Novartis Institute of Biomedical Research (USA)
NICE National Institute for health and Clinical Excellence
NICU Neonatal Intensive Care Unit
NIDCR National Institute of Dental & Craniofacial Research (NIH)
NIDDM Non Insulin Dependent Diabetes Mellitus
NIEHS National Institute of Environmental Health Sciences (USA>NIH)
NIF Neutrophil Inhibitory Factor
NIGMS National Institute of General Medical Sciences [USA - (NIH)]
NIH National Institutes of Health (USA Government)
NIMH National Institute of Mental Health (USA - NIH)
NIMS National Institute for Materials Science (Japan)
NIOSH National Institute for Occupational Safety & Health (USA)
NiPhC Nickel Phthalo Cyanine (dye)
NIPPV Non Invasive Positive-Pressure Ventilation
NIR Near Infra Red
NIRS Near Infra Red Spectroscopy
NIST National Institute of Standards & Technology (Commerce Dept.; USA)
NIT 2-n-Nonyl Iso Thiazolin-3-one (Biocide)
NIV Non Invasive Ventilation
NJNC New Jersey Nanotechnology Consortium
NK Neuro Kinin
NK Natural Killer (immunology; lymphocytes)
NKEFB Natural Killer cell Enhancing Factor B
NL Nano Lithography
NL NetherLands
NLM National Library of Medicine (U.S.A. Government)
NLO Non Linear Optical
NMA N-Methylol Acrylamide
NMB Neuro Muscular Blockade
NMBA Non-depolarizing Neuromuscular Blocking Agent
NMC Ni Mn Co
NMDA N Methyl D Aspartate
NMDAR N-Methyl-D-Aspartate Receptor
nmDBMD Nonsense Mutation Duchenne/Becker Muscular Dystrophy
NME New Molecular Entity (Pharma.)
NMIBC non-muscle invasive bladder cancer
NMOS N - type Metal Oxide Semiconductor
NMP Non Metal Product
NMP Nitroxide Mediated Polymn. (Living controlled polymn.)
NMP Nuclear Matrix Protein
NMP N-Methyl Pyrrolidone
NMR Nuclear Magnetic Resonance
NNI National Nanotechnology Initiative (USA Government)
NNR Neuronal Nicotinic Receptors
NNRTI Non Nucleoside Reverse Transcriptase Inhibitor
NO Nitric Oxide
NO NOrway
NOBS Nonanoyl Oxy Benzene Sulfonate
NOEL No Observable-Effects Level
NOH Neurogenic Orthostatic Hypotension
NOS Nitric Oxide Synthase
NOS Nitrogen oxide Overproduction Syndrome
NOS Nitrogen oxide Overproduction Syndrome
NPB n Pr Bromide
NPC Naso Pharyngeal Carcinoma
NPC Nuclear Pore Complex
NPC Niemann Pick C (disease)
NPCA National Paint & Coatings Association (USA)
NPCM Non-PHA Cell Material
NPE Nonyl Phenol Ethoxylate
NPG Neo Pentyl Glycol
NPH Neutral Protamine Hagedorn
NPI Non Polarity Index (Ester Lubricants)
NPLS Non Patent Literature Source
NPM Nucleo Phosmin protein Mutants
NPN Non Protein Nitrogen
NPRA Natriuretic Peptide Receptor A
NPT Nanosphere Preconcentrate Technology
NPWT Negative Pressure Wound Therapy
NPY Neuro Peptide Y
NR Natural Rubber
NRAMP Natural Resistance Associated Macrophage Protein
NRC National Research Council
NREL National Renewable Energy Laboratory (USA's Dept. of Energy)
NRP Non-Ribosomal Peptide
NRPS Non Ribosomal Peptide Synthetase
NRTI Nucleoside Reverse Transcriptase Inhibitor
NRU Nitrogen Recovery Unit
NS Non Structural (Protein)
NSAID Non - Steroid Anti - Inflammatory Drugs
NSCLC Non Small Cell Lung Cancer
NSF National Science Foundation
NSRI Norepinephrine Serotonin Reuptake Inhibitors
NSTC National Science & Technology Council (USA)
NSTE Non ST Elevation (Cardiology)
NSTEMI Non-ST-segment Elevation Myocardial Infarction
NT Neuro Trophin
NT Neuro Tensin
NT Pro BNP N-Terminal Pro-B-type Natriuretic Peptide
NTA Nitrilo Tri Acetate
NTA Non Transparent Automotive (trim uses)
NTDDS Nerve Targeted Drug Delivery System
NTE Negative-Thermal-Expansion
NTF Neuro Trophic Factor
NTM Non Tuberculous Mycobacterium
NTP National Toxicology Program [Dept Health & Human Services (USA)]
NTP Nano Transfer Printing (Electronics)
NTP Neural Thread Protein (Alzheimers Disease)
NTR Nicotinamide adenine dinucleotide phosphate Thioredoxin Reductase
NTR Non Translated Region (gene engineering)
NTSB National Transportation Safety Board (U.S.A.)
NUTI Nosocomial Urinary Tract Infection
NVH Noise, Vibration & Harshness
NVP N-Vinyl Pyrrolidone
NW Non Woven
NYLS Navy Yoelii Liver Stage (Malaria)
NYSE New York Stock Exchange