| Acronym | Meaning |
| PDI | Polydispersity Index |
| BRM | Biological Response Modifier |
| LD | Laser Diode |
| SESAME | Second European Stratospheric Arctic And Midlatitude Experiment |
| LFMO | Ligand Field Method Combined With Linear Combination Of Atomic Orbitals-molecular Orbital Method |
| ESTEC | European Space Research And Technology Centre |
| POU | Point Of Use |
| IC | Ion Chromatography |
| CCSD-UED | CCSD-unrelaxed Energy Derivative |
| PTS | Pressure Tuning Spectroscopy |