| Acronym | Meaning |
| IVCT | Intervalence Charge Transfer |
| NLLAP | National Lead Laboratory Accreditation Program |
| RFI | RCRA Facility Investigation |
| PPT-MCF | Pseudo-polarization Tensor-mutually Consistent Field ( For Mol. Interactions) |
| SPLEEM | Spin-polarized Low-energy Electron Microscopy |
| SMA | Specific Methanogenic Activity |
| STP | Similarity Transformation (based) Perturbation (theory) |
| LTK | Laser Thermal Keratoplasty |
| TFDW | Thomas-Fermi-Dirac-Von Weizsaecker (method For Electronic Structure Calcns. On Mols.) |
| HFB | Hybrid Fluidized Bed |