| Acronym | Meaning |
| APAR | Absorbed Photosynthetically Active Radiation |
| IPPA | Independent Pair-potential Approximation |
| STERAO | Stratosphere-Troposphere Experiments: Radiation |
| AFIS | Advanced Fiber Information System |
| CBEDP | Convergent-beam Electron-diffraction Pattern |
| HFFC | Hartree-Fock Frozen Core |
| SCPM | Scanning Chemical Potential Microscopy |
| TMB | Table Mesa Basalt (USGS Rock Standard) |
| NERC | Natural Environment Research Council (UK) |
| SC-FLAPW | Self-consistent Full-potential Linearized-augmented-plane-wave |