| Acronym | Meaning |
| REPE | Resonance Energy Per Pi Electron |
| WPAC | Working Party On Analytical Chemistry |
| HBV | Hepatitis B Virus |
| NEGF | Nonequilibrium Green Function |
| PWTM | Plane-wave T-matrix (for Electron-atom Scattering) |
| ISH | In Situ Hybridization |
| OES | Optical Emission Spectroscopy |
| ATD | Atmospheric Technology Division |
| IIRF | Intergalactic IR Radiation Field |
| TRFQ | Time-resolved Fluorescence Quenching |