| Acronym | Meaning |
| LCCO | Linear Combination Of Cellular Orbital |
| TIPS | Transferable Intermol. Potential Functions |
| PASA | PCR Amplification Of Specific Alleles |
| ECPA | European Crop Protection Association |
| GFCS | Gas Filter Correlation Spectroscopy |
| USAN | US Adopted Names (for Drugs) |
| VTST | Variational Transition-state Theory |
| LEIS | Low-Energy Ion Scattering Spectroscopy |
| CAL | Computer Aided Learning |
| BRS | Biennial Reporting System |