| Acronym | Meaning |
| SO-LAPW | Spin-orbit (coupling) Linearized Augmented Plane Wave |
| CCAP | Cancer Chromosome Aberration Project |
| NFRAP | No Further Remedial Action Planned |
| CEPA | Correlated Electron Pair Approxn. |
| DIRBE | Diffuse IR Background Experiment |
| DWPI | Derwent World Patents Index |
| GMAV | Genus Mean Acute Value |
| EPACML | Environmental Protection Agency's Composite Landfill Model |
| VSP | Vertical Seismic Profile |
| GCE | Ground-based Cloud Experiment |