| Abbreviation | Definition |
|---|---|
| NBRI | National Botanical Research Institute |
| NDD | Nature-Deficit Disorder |
| NDVI | Normalized Difference Vegetative Index |
| NESBA | New England Society of Botanical Artists |
| NF | Natural Form |
| NF | Northern Forest |
| NFL | Nerve Fibre Layer |
| NFS | National Forest Service |
| NG | Not Germinated |
| NGHP | Native Graminoid and Herbaceous Perennials |
| NIAB | National Institute of Agricultural Botany |
| NK | Natural Killer |
| NLS | Nuclear Localization Signal |
| NM | Northern Maple |
| NNLE | Nelumbo Nucifera Leaf water Extract |
| NOLC | NO Longer Connected |
| NOLJ | NO Longer Joined |
| NOM | Natural Organic Matter |
| NOMI | NOlina MIcrocarpa |
| NOMV | Nothoscordum Mosaic Virus |