| Acronym | Meaning |
| RIR | Reference-intensity Ratio |
| ARM | Agricultural Runoff Model |
| LPLC | Lift Plus Lift Cruise |
| DQC | Decagonal Quasicrystal |
| SESAME | Second European Stratospheric Arctic And Midlatitude Experiment |
| SIR | Selected Ion Recording |
| SFC | Supercritical Fluid Chromatography |
| APAR | Absorbed Photosynthetically Active Radiation |
| FORS | Fully Optimized Reaction Space |
| DVM | Discrete Variational Method |