| Acronym | Meaning |
| RHFR | Relativistic Hartree-Fock-Roothaan |
| FPIA | Fluorescence Polarization Immunoassay |
| BCSC | Buried Contact Solar Cell |
| HMAC | Hazardous Materials Advisory Council |
| SCEHM | Soil Chemical Exchange Of Heavy Metals Model |
| CCPA | Canadian Chemical Producers Association |
| ILS | Intracavity Laser Spectroscopy |
| HVA | Homovanillic Acid |
| ETP | Emerging Technology Program (USEPA SITE) |
| LCF | Low-cycle Fatigue |