| Acronym | Meaning |
| ATCM | Air Toxics Control Measure |
| RFC | Inhalation Reference Concentration |
| RXF | Refracted X-ray Fluorescence |
| OEH | One-electron Hamiltonian (quantum Method) |
| PCM | Phase-change Material (in Heat Storage) |
| DHXP | Dihexyl Phthalate |
| LNT | Liquid Nitrogen Temperature |
| RF | Response Factor |
| BDTT | Brittle-to-ductile Transition Temperature |
| ITTFA | Iterative Target Transformation Factor Analysis |