| Acronym | Meaning |
| WHSV | Wt. Hourly Space Velocity |
| GVB-INIT | Generalized Valence Bond-initial (guess Wave Function) |
| TIGER | Technique For Importing Greater Evolution Resolution In Multidimensional NMR |
| NELAP | National Environmental Laboratory Accreditation Program |
| ESEEM | Electron Spin Echo Envelope Modulation |
| ESD | Electron-stimulated Desorption |
| UCHFPT | Uncoupled Hartree-Fock Perturbation Theory |
| POM | Particulate Organic Matter |
| GFPE | Generalized Fokker-Planck Equation |
| DBMS | Data Base Management System |