| Acronym | Meaning |
| RMSEP | Root-mean-square Error Of Prediction |
| SCCF | Self-consistent Crystal Field (method For Calcns. On Molecular Crystals) |
| RWKB | Relativistic Wentzel-Kramers-Brillouin |
| GLWQB | Great Lakes Water Quality Board |
| NSF | National Science Foundation |
| SOCAB | South Coast Air Basin |
| GMCC | Geophysical Monitoring For Climate Change |
| ACPCSA | Adiabatic Capture Partial Centrifugal Sudden Approximation |
| PAPP-A | Pregnancy-associated Plasma Protein A |
| HGCU | Hot-gas Particulate Cleanup |