| Acronym | Meaning |
| PTGS | Picosecond Transient Grating Spectroscopy |
| DPUMPN | Double-annihilation Procedure Unrestricted Moeller-Plesset Nth-order |
| APIMS | Atmospheric Pressure Ionization Mass Spectrometry |
| GAW | Global Atmospheric Watch |
| DSN | Deep Space Network |
| MC | Mclean-Chandler Basis Set |
| LTP | Long-term Potentiation |
| WWAP | World Water Assessment Programme |
| PFE | Pressurized Fluid Extraction |
| PDGFR | Platelet-derived Growth Factor Receptor |