| Acronym | Meaning |
| AU | Absorbance Units |
| COIL | Chem. Oxygen-iodine Laser |
| AMTEC | Alkali Metal Thermoelectric Converter |
| ART | Atom Relay Transistor |
| HEI | Highly Exposed Individual |
| BPCD | Bipolar Pulse Conductivity Detector |
| IVCT | Intervalence Charge Transfer |
| MSRI | Mass Spectroscopy Of Recoiled Ions |
| MCMC | Markov Chain Monte Carlo |
| SIMPLISMA | Simple-to-use Interactive Self-modeling Mixture Analysis |