| N | |||
| n | Nano | ||
| N | Nitrogen | ||
| Na | Sodium | ||
| NA | Numerical Aperture; Network Analyzer | ||
| NAA | Neutron activation analysis | ||
| NADC | North American Digital Cellular | ||
| NADCAP | National Aerospace and Defense Contractors Accreditation Procedures | ||
| NAMPS | Narrow band Advanced Mobile Phone Service | ||
| NAND | Logic term - Not-AND | ||
| nano | 1.00E-9 (1/1,000,000,000; symbolized by the prefix n) | ||
| NASA | National Aeronautics and Space Administration | ||
| Nb | Niobium | ||
| NBE | Near Band Edge | ||
| NBR | Nitrile Butadiene-Acrylonitrile Rubber | ||
| NBS | National Bureau of Standards | ||
| NC | NanoCrystal; Numerical control | ||
| NCMS | National Center for Manufacturing and Science | ||
| NCS | Network Communication Standard | ||
| NCTA | National Cable & Telecommunications Association | ||
| Nd | Neodymium | ||
| ND | New Donor; Native defect | ||
| NDA | Nondisclosure agreement | ||
| NDE | Nondestructive evaluation | ||
| NDIR | Non-dispersive infrared spectroscopy | ||
| NDP | Neutron depth profiling | ||
| NDT | NonDestructive Testing | ||
| NDUV | Non-Dispersive UltraViolet spectroscopy | ||
| Ne | Neon | ||
| NEC | National Electric Code | ||
| NECQ | National Electronics Component Qualification System | ||
| NEMA | National Electrical Manufacturers Association | ||
| NEP | Noise Equivalent Power | ||
| NESHAP | National emissions standards for hazardous air pollutants | ||
| NETD | Noise Equivalent Temperature Difference | ||
| NewsML | News Mark-up Language | ||
| NEXAFS | Near Edge X-ray Absorption Fine Structure | ||
| NEXT | Near End CrossTalk | ||
| NF | Noise Figure | ||
| NFE | Near Free Electron | ||
| NFM | Noise Figure Meter | ||
| NFOM | Near field optical microscopy | ||
| NFPA | National Fire Protection Association | ||
| NGT | Not Greater Than | ||
| Ni | Nickel | ||
| NIC | Network Interface Card | ||
| NIH | National Institutes of Health | ||
| NIP | N-type/Intrinsic/P-type | ||
| NIST | National Institute for Science and Technology | ||
| NITF | News Industry Text Format | ||
| NIU | Network Interface Unit | ||
| NLO | Non-Linear Optic | ||
| NLOVS | Niet Lineaire Optica Vaste Stoffen | ||
| NLR | Non-Linear Refraction | ||
| NLT | Not Less Than | ||
| nm | Nanometer | ||
| NMOS | Negative channel metal-oxide semiconductor | ||
| NMR | Nuclear Magnetic Resonance; Normal mode rejection | ||
| NN | Nearest Neighbor; Neural network | ||
| NNN | Next Nearest Neighbor | ||
| No | Nobelium | ||
| NOB | Non-biased Optical Bistable (device) | ||
| NOCI | Non Orthogonal Configuration Interaction | ||
| NOR | Logic term - Not-OR | ||
| NOT | Logic term - NOT | ||
| Np | Neptunium | ||
| NPL | Zero (No) Phonon Line | ||
| NPN | Negative-positive-negative | ||
| NPR | Noise Power Ratio | ||
| NPT | Non-Punch Through | ||
| NPV | Net Present Value | ||
| NR | Noise Reduction | ||
| NRA | Nuclear Reaction Analysis | ||
| NRE | Non-Recurring Engineering | ||
| NRZ | Non-Return to Zero | ||
| NSA | National Secutity Agency | ||
| NSE | Neutral Stream Etch | ||
| NSF | National Science Foundation | ||
| NTC | Negative Temperature Coefficient | ||
| NTD | Neutron Transmutation Doping | ||
| NTE | Not To Exceed | ||
| NTP | Normal Temperature and Pressure | ||
| NTSC | National Television System Committee | ||
| NTU | Network Terminal Unit; Nephelometric Turbidity Units | ||
| NV | Non-Volatile | ||
| NVM | Non-Volatile Memory | ||
| NvOD | Near Video On Demand | ||
| NVR | Non-Volatile Residue | ||
| NVRAM | Non-Volatile RAM | ||
| NXOR | Logic term - Not-XOR | ||
| O | |||
| O | Oxygen | ||
| OA | Organic Acid | ||
| OAAF | Open Advanced Authoring Format | ||
| OAC | Optical Absorption Coefficient | ||
| OASIS | Organization for the Advancement of Structured Information Standards | ||
| OBA | Object Behavior Analysis | ||
| OBEM | Object-Based Equipment Model | ||
| OBIC | Optical Beam Induced Current | ||
| OBL | Object-Based Language | ||
| OC | Open Collector; Open Circuit | ||
| OCAP | OpenCable Application Platform | ||
| OCR | Optical Character Recognition | ||
| OCSP | Online Certificate Status Protocol | ||
| OCXO | Oven Controlled Crystal Oscillator | ||
| OD | Outside Diameter | ||
| O-D | Zero dimensional | ||
| ODBC | Open DataBase Connectivity | ||
| ODEND | OR Optical Detected ENDOR | ||
| ODEPR | Optical Detected EPR | ||
| ODMII | Optical Detected Microwave induced Impact Ionization | ||
| ODMR | Optical Detected Magnetic Resonance | ||
| ODP | Ozone Depletion Potential | ||
| ODR | Oscillating Disk Rheometer | ||
| ODRL | Open Digital Rights Language | ||
| ODS | Ozone-Depleting Substances | ||
| Oe | Oersted (magnetic intensity unit) | ||
| OEBR | Optical Edge Bead Removal | ||
| OEE | Overall Equipment Effectiveness | ||
| OEIC | OptoElectronic IC | ||
| OEM | Original Equipment Manufacturer; Office of Emergency Management | ||
| OES | Optical Emission Spectroscopy | ||
| OFDM | Orthogonal Frequency Division Multiplexing | ||
| OFHC | Oxygen-Free High-Conductivity Copper | ||
| OFS | Open File System | ||
| OI | Opto Isolator | ||
| OID | Object Interaction Diagram; Object IDentification | ||
| OIL | Ontology Interface Layer | ||
| OIM | Orientational Imaging Microscopy | ||
| OL | Overlay | ||
| OLB | Outer Lead Bond | ||
| OLE | Object Linking and Embedding | ||
| OLED | Organic LED | ||
| OLS | Ordinary Least Squares | ||
| OM | Operational Modeling; Optical Microscopy; OrganoMetallic | ||
| OMA | Object Management Architecture; Open Mobile Alliance | ||
| OMG | Object Management Group | ||
| OMS | Optical Mass Spectroscopy | ||
| OMT | Object Modeling Technique; Ortho-Mode Transducer | ||
| OMVPE | Organometallic VPE | ||
| ONE | Open Network Environment (Sun) | ||
| ONP | Optical Nuclear Polarization | ||
| OO | Object-Oriented | ||
| OOA | Object-Oriented Analysis | ||
| OOD | Object-Oriented Design | ||
| OODB | Object-Oriented Data Base | ||
| OODBMS | Object-Oriented Data Base Management System | ||
| OOP | Object Oriented Programming | ||
| OOPS | Object-Oriented Programming System | ||
| OpAmp | Operational Amplifier | ||
| OPC | Optical Particle Counter; Optical Proximity Correction | ||
| OPL | Optically Pumped Laser | ||
| OPSE | Optically Pumped Stimulated Emission | ||
| OPW | Orthogonalized Plane Wave | ||
| OR | Logic term - OR | ||
| ORB | Object Request Broker | ||
| ORM | Other Regulated Material | ||
| ORNL | Oak Ridge National Laboratory | ||
| Os | Osmium | ||
| OS | Operating System | ||
| OSC | Organic Solderability Coating | ||
| OSCI | Online Services Computer Interface | ||
| OSD | On Screen Display | ||
| OSDH | Optical Shubnikhov-de Haas effect | ||
| OSF | Open Systems Foundation | ||
| OSHA | Occupational Safety Hazards Act | ||
| OSI | Open System Interconnection | ||
| OSP | Organic Solderability Preservative | ||
| OSRM | Office of Standard Reference Materials | ||
| OSS | Object Services Standard; Operation Support System | ||
| OSV | Offset Scan Voting | ||
| OTOI | 3rd order Output Intercept | ||
| OTP | One Time Programmable | ||
| OTPROM | One Time Programmable ROM | ||
| OVD | Outside Vapor Deposition ( Corning ) | ||
| OVL | Overlay | ||
| OX | OXide | ||
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