| Acronym | Meaning |
| EQO | Environmental Quality Objective |
| GFQMC | Green Function Quantum Monte Carlo |
| AIRS | Atmospheric Infrared Sounder |
| PTSPGF | Perturbative-type Single-particle Green Function |
| SOCI | Second-order Configuration Interaction |
| DGNAA | Delayed Gamma-ray Neutron Activation Analysis |
| ART | Atom Relay Transistor |
| CBX | Coulomb-Born Approxn. With Exchange |
| IUGG | International Union Of Geodesy And Geophysics |
| DARTAB | Dose And Risk Assessment Tabulation |