| Acronym | Meaning |
| PANAK | Peroxyacetyl Nitrate Aldehyde Ketones |
| PA | Photoinduced Absorption |
| FWPCA | Federal Water Pollution Control Act Of 1972 |
| SNUR | Significant New Use Rule |
| SPUPS | Spin Polarised Ultraviolet Photoelectron Spectroscopy |
| OSTE | One-step Temper Embrittlement |
| EIS | Electrochem. Impedance Spectroscopy |
| SAP | Scientific Advisory Panel (FIFRA) |
| BEJ | Best Expert Judgement |
| UNO-CAS | Unrestricted Natural Orbital-complete Active Space |