| NIR | Near Infra-Red |
|---|---|
| NIR | Near Infrared Spectroscopy |
| NIR | Near-infrared interactance |
| NIR | Nitrite reductase |
| NIRCA | Non Isotopic RNAse Cleavage Assay |
| NIRS | Near Infra-red Spectroscopy |
| NIRS | Near Infrared Reflectance Spectroscopy |
| NIRS | Near infrared spectrophotometry |