| Acronym | Meaning |
| RFE | Relative Fit Error |
| EWALD | Evanescent Wave Analysis With Laser Diodes |
| ANP | Atrial Natriuretic Peptide |
| HERS | High Energy Range Spectrometer |
| CDWA | Continuum Distorted-wave Approxn. (for Scattering Calcns.) |
| APNO | Atomic Pair Natural Orbital |
| SEHF | Spin-extended Hartree-Fock |
| HCI | Human-Computer Interface |
| ASTM | American Society For Testing And Materials |
| EXGF(1) | Extended Group Function(1) (model Wave Function Accounting For Electron Correlation) |