| Acronym | Meaning |
| ILAS | Improved Limb Atmospheric Spectrometer |
| LOI | Loss On Ignition |
| RDE | Rotating Disk Electrode |
| RIP | Ribosome-inactivating Protein |
| RQCISD | (spin) Restricted QCISD |
| NIRS | Neutral Impact Radiation Spectroscopy |
| RFA | Regulatory Flexibility Act |
| LIDAR | Laser Intensity Direction And Ranging |
| MRL | Maximum Residue Limit |
| APSG | Antisymmetrized Product Of Separated Geminals |