| Acronym | Meaning |
| ESEEM | Electron Spin Echo Envelope Modulation |
| EHS | Extremely Hazardous Substance |
| DCEL | Direct Current Electroluminescent |
| WRAQS | Western Regional Air Quality Study |
| GUS | Groundwater Ubiquity Score |
| SINDO/F | SINDO Free Of Empirical Parameters |
| PISCES | Passive In-Situ Concn. Extn. Sampler |
| PEELS | Parallel Electron Energy Loss Spectroscopy |
| INSIPID | Inadequate Sensitivity Improvement By Proton Indirect Detection |
| COMAH | Control Of Major Accident Hazards |