| Acronym | Meaning |
| PIR | Protein Identification Resource |
| SNIF | Site-specific Natural Isotope Fractionation |
| LARVA | Light-absorption Ratio Variation Approach |
| IRM | Information Resources Management |
| JURIS | Justice Retrieval And Inquiry System |
| NMDR | Nuclear Magnetic Double Resonance |
| BIPM | Bureau International Des Poids Et Mesures |
| CGC | Capillary Gas Chromatography |
| LEO | Low Earth Orbit |
| RTCDW | Relativistic Target Continuum Distorted Wave (approxn. For Electron Capture In Ion-atom Collisions) |