| Acronym | Meaning |
| APM | Atom Probe Microanalysis |
| MSD | Mass Selective Detector |
| LTMED | Low Temperature Multi-effect Distillation |
| BIRD | Blackbody Infrared Radiative Dissociation |
| PSMO | Pseudo MO |
| PHIP | Para-Hydrogen Induced Polarization |
| TEDS | Timed Exposure Diffusive Sampler (for Air Pollution) |
| QAC | Quaternary Ammonium Compound |
| EIS | Emissions Inventory System (US EPA Air Database) |
| OB/OD | Open Burn/open Detonation |