| Acronym | Meaning |
| REMPI | Resonance-Enhanced Multiphoton Ionization (for Mass Spectrometry) |
| STIG | Steam-injected Gas Turbines |
| AIR | Aerosol Ionic Redistribution |
| CMAS | Completely Mixed Activated Sludge |
| PARAFAC | Parallel Factor Analysis |
| OEH | One-electron Hamiltonian (quantum Method) |
| CHFPT | Coupled Hartree-Fock Perturbation Theory |
| CASV-MC-SCF | Complete Active Space Valence Space-multiconfiguration-SCF |
| CHMO | Constrained Hartree-Fock Orbitals |
| SBTT | Small Business Technology Transfer |