| Acronym | Meaning |
| BRE | Bond Resonance Energy |
| EO | Equivalent Orbital |
| HSWA | Hazardous And Solid Waste Amendments Of 1984 |
| EDWBA | Exponential Distorted Wave Born Approximation |
| MVCD | Magnetic Vibrational Circular Dichroism |
| PM10 | Particulate Matter |
| APTI | Air Pollution Training Institute |
| LSTH | Liu-Siegbahn-Truhlar-Horowitz (potential-energy Surface) |
| BNF | Biological Nitrogen Fixation |
| PA/SI | Preliminary Assessment/Site Inspection |