| Acronym | Meaning |
| SWICS | Solar Wind Ion Composition Spectrometer |
| GLO | Gaussian Lobe Orbital |
| CCMC-T2 | Coupled-cluster Multiconfigurational (double-excitation Method With Cluster Operator Approximated By T2) |
| BSPT | Blizzard Santry Perturbation Theory |
| REAPDOR | Rotational-echo Adiabatic-passage Double-resonance |
| GANC | Generalized Acid Neutralization Capacity Test |
| HTSUS | Harmonized Tariff System U.S. |
| GCOS | Global Climate Observing System (WMO |
| ATM | Analytic Tetrahedron Method (for Brillouin-zone Integrals And Electron Spin Densities) |
| GME | Generalized Master Equation (in Quantum Statistical Mechanics) |