| Acronym | Meaning |
| IKBS | Intelligent Knowledge Based Systems |
| 3DAP | Three Dimensional Atom Probe |
| RAP | Remedial Action Project Or Plan |
| PCGC | Parallel Column Gas Chromatography |
| EPR | Electron Paramagnetic Resonance |
| BBFM | Bond-bending Force Model (for Phonon Calcns.) |
| CLU-IN | Clean-Up Information Bulletin Board System (formerly OSWER-BBS) |
| CAP | Corrective Action Plan |
| HECD | Hall Electrolytic Conductivity Detector |
| NASBA | Nucleic Acid Sequence-based Amplification |