| Acronym | Meaning |
| CERPIES | Collision Energy Resolved Penning Ionization Electron Spectra |
| ECCI | Electron Capture Chemical Ionization |
| GA | Glauber Approximation (in Electron-atom Scattering) |
| PTR | Photothermal Radiometry |
| INN | International Nonproprietary Names (for Drugs) |
| PEK | Poly(ether Ketone) |
| CCWE | Constituent Concentrations In Waste Extract |
| PSCC | Pseudostate Close Coupling |
| SES | Surface Electronic State |
| CEEL | Community Emergency Exposure Level |