| Acronym | Meaning |
| QAC | Quaternary Ammonium Compound |
| CHO | Complex Harmonic Oscillator (in Mol. Scattering Theory) |
| HAUP | High Accuracy Universal Polarimeter |
| RDE | Rotating Disk Electrode |
| ERNS | Emergency Response Notification System |
| ELMO | Energy-localized Molecular Orbital |
| SABRE | Sweden And Britain Radar Experiment |
| SEU | Single Event Upset (in Spacecraft Power Systems) |
| CBE | Chemical Beam Epitaxy |
| HRBS | High Resolution Rutherford Backscattering |