| Acronym | Meaning |
| CCAP | Cancer Chromosome Aberration Project |
| LSPR | Localized Surface Plasmon Resonance |
| RC(XI) | (fully) Correlated Relativistic Local-density |
| HDES | Hydrodynamic Equilibrium System |
| HELC | High Efficiency Liquid Chromatography (Russian |
| XIS | X-ray Isochromat Spectroscopy |
| NRRA | Nuclear Resonant Reaction Analysis |
| REM | Reflection Electron Microscopy |
| RSS | Residual Sum Of Squares |
| APMI | American Powder Metallurgy Institute |