| Acronym | Meaning |
| MET | Many Electron Theory (for Singlet Ground State) |
| FCCSET | Federal Coordinating Council On Science |
| PSEP | Polyhedral Skeletal Electron Pair (for Metal Clusters) |
| TALIF | Two-photon Absorption Laser Induced Fluorescence |
| TCF | T Cell Factor |
| HPCN | High-Performance Computing And Networking |
| TDC | Time-to-Digital Converter |
| HSPF | Hydrological Simulation Program-Fortran |
| I-TE | International Toxicity Equiv. |
| LCGO | Linear Combination Of Group Orbitals |