| Acronym | Meaning |
| ECP-CPP | Effective Core Potential (augmented By)-core Polarization Potential |
| NCLAN | National Crop Loss Assessment Network |
| NEMO | Nonempirical Molecular Orbital |
| SAXPS | Selected Area X-ray Photoelectron Spectroscopy |
| HAZWOPER | Hazardous Waste Operations And Emergency Response Regulations |
| VMO | Virtual Molecular Orbital |
| NADP | National Atmospheric Deposition Program |
| TDR | Time Domain Reflectometer |
| NRA | Neutron Reaction Analysis |
| SE | Symmetric Eikonal (approxn. In Calcns. On Ion Scattering) |