| Acronym | Meaning |
| RIP | RCRA Implementation Plan |
| CPP | Core Polarization Potential |
| VEOMP | Valence-electron-only Model Potential (for Mol. SCF Calcns.) |
| CAMEO | Color Augmented Microscopy By Electromagnetic Offset |
| ORF | Open Reading Frame (DNA Sequence) |
| OASIS | Ocean And Atmospheric Sounding Interferometer System |
| TOXLINE | Toxicology Information Online (NLM) |
| PTEN | Phosphatase And Tensin Homolog (mutated In Multiple Advanced Cancers 1) |
| WMT | Warped Muffin-tin Approximation |
| NPO | National Program Office |