| Acronym | Meaning |
| CPFD | Coupled-pair Functional With Double Excitation |
| ZDDO | Zero Diatomic Differential Overlap |
| EDAX | Energy Dispersive Analysis Of X-rays |
| MRSPT | Modified Rayleigh-Schroedinger Perturbation Theory |
| NAIMA | North American Insulation Manufacturers Association |
| NOW | Nonhazardous Oil Field Waste |
| IMO | Intermolecular Mol. Orbital |
| BEFS | Berkeley Extreme And Far-UV Spectrometer |
| WQMP | Water Quality Management Plan |
| HCN | US Historical Climatology Network |