| Acronym | Meaning |
| ATDC | After Top Dead Center (gasoline And Diesel Engine Timing) |
| LEACHMP | Leaching Estimation And Chemistry Model-pesticides |
| MSF | Multi-stage Flash Distillation Plant |
| ESD | Electron-stimulated Desorption |
| CMI | Corrective Measures Implementation |
| EDD | Enforcement Decision Document |
| SAT | Sulfuric Acid Trihydrate (polar Stratosphere Cloud Aerosol) |
| RRS | Resonance Rayleigh Scattering |
| NES | Neurobehavioral Evaluation System |
| IPT | Iterated Perturbation Theory |