| Acronym | Meaning |
| HWI | Hazardous Waste Incineration |
| IPA | Independent-particle Approximation (in Quantum Calcns. On Solids) |
| BAL | Bronchoalveolar Lavage |
| OMO | Orthonormal Molecular Orbital |
| AFRP | Advanced Fuel Recycle Program |
| PIT | Phase Inversion Temperature |
| SASS | Source Assessment Sampling System |
| GO | Gaussian Overlap (approxn. In Mol. Calcns.) |
| EO | Equivalent Orbital |
| SERA | Sequential Electrochemical Reduction Analysis |