| Acronym | Meaning |
| CSACM | Canonical Statistical Adiabatic Channel Model (in Reactions) |
| PPMSVX | Pseudopotential Multiple-scattering Valence-exchange |
| AASHTO | American Association Of State And Highway Transportation Officials |
| WPT | Wave Packet Perturbation Theory |
| DR-RWA | Dominant Resonance-rotating Wave Approximation |
| GDIM | Generalized Diatomics-in-molecules (theory) |
| APC | Anaphase-promoting Complex |
| SPF | Simons-Parr-Finlan (potential Function) |
| FTM | Fault Tree Model |
| GCRIO | Global Change Research Information Office |