| Abbreviation | Definition |
|---|---|
| ND | None Detected |
| ND | Non-preferred Direction |
| NDA | Nuclear Decommissioning Authority |
| NDE | Neutrino Detector Experiment |
| NDE | Nucleon Decay Experiment |
| NDET | Non Destructive Electromagnetic Testing |
| NDFLR | Nonlinear Dispersive Field Line Resonances |
| NDP | Neutron Depth Profiling |
| NDSM | Non-Dimensional Schmidt Model |
| NE | Naked Eye |
| near-infrared | Nir |
| NEBM | Nudged Elastic Band Method |
| NEDT | Noise Equivalent Delta Temperature |
| NEEP | Nuclear Engineering and Engineering Physics |
| NEK | Nuclear Extract Kit |
| NEMP | Nuclear ElectroMagnetic Pulse |
| NEMS | NanoElectroMechanical Systems |
| NEMS | National Energy Modeling System |
| NET | Next European Torus |
| NFAB | Near Field Adaptive Beamforming |