| Acronym | Meaning |
| TCDW1 | Target Continuum Distorted-wave 1st-order (for At. Collisions) |
| LPLC | Low Pressure Liquid Chromatography |
| RTECS | Registry Of Toxic Effects Of Chemical Substances (NLM) |
| SUPERDARN | Super Dual Auroral Radar Network |
| IPA | Independent-pair Approximation |
| EMAP | Environmental Monitoring And Assessment Program (US EPA) |
| APIMS | Atmospheric Pressure Ionization Mass Spectrometry |
| BPR | Bromopyrogallol Red |
| AU | Absorbance Units |
| FOTOS | First-order Theory Of Oscillator Strength |