| Acronym | Meaning |
| PCV | Positive Crankcase Ventilation |
| SCOTCH | Spin Coherence Transfer In Chemical Reactions |
| SMO | Statistical Model Of Overlap |
| SCC | Sludge Conditioning Controller |
| HEL | Human Erythroleukemia |
| SAI | Spline-fitted Ab Initio (potential Energy Surface) |
| EACN | European Air Chemistry Network |
| DEGMBE | Diethylene Glycol Mono-n-Bu Ether |
| AEROCE | Atmosphere-Ocean Chemistry Experiment |
| E-2PH-TDA | Extended Two-particle-hole Tamm-Dancoff Approxn. (green-function Method For Ionization-energy Calcns.) |