| Acronym | Meaning |
| NPOESS | National Polar Orbiting Environmental Satellite System |
| PFR | Plug Flow Reactor |
| ADAS | Acid Deposition Assessment Staff |
| MDC | Maxwell Displacement Current |
| ELLPAT | Environmental Lead Laboratory Proficiency Analytical Testing |
| LBSF | Local Back Surface Field (solar Cells) |
| DLCA | Diffusion Limited Cluster Aggregation |
| CLU-IN | Clean-Up Information Bulletin Board System (formerly OSWER-BBS) |
| EMER | Electromagnetic Molecular Electronic Resonance |
| IAVCEI | International Association Of Volcanology And Chemistry Of The Earth's Interior |