| Abbreviation | Definition |
|---|---|
| NL | Node Label |
| NLE | Niels Larsen Elektronik |
| NLED | Northern Lights Electronic Design |
| NLM | Network Loadable Module |
| NLO | Non-Linear Optic |
| NLOVS | Niet-Lineaire Optica Vaste Stoffen (Non-linear optics fixed substances) |
| NLR | Non-Linear Refraction |
| NLTF | Non-Linear Transfer Function |
| NLZ | Noise Level Zero |
| NM | Noise Margin |
| NMA | Network Monitering Activities |
| NMC | Number of Multiplexed Components |
| NME | Network Management Ethernet |
| NMEA | National Marine Electronics Association |
| NMEA | The National Marine Electronics Asso |
| NMEC | New Mexico Electrical Code |
| NMES | Neuro Muscular Electrical Stimulation |
| NMET | Night Marks Electric Trio |
| NMI | National Microelectronics Institute |
| NMOC | Non-metallic optical cable |