| Acronym | Meaning |
| ITFW | Improved Thomas-Fermi-Weizaecker (model) |
| LAQL | Lowest Analytically Quantifiable Level |
| LCVD | Laser-induced Chemical Vapor Deposition |
| AGN | Active Galactic Nuclei |
| BATS | Biosphere-Atmosphere Transfer Scheme |
| SIRMS | Stable Isotope Ratio Mass Spectrometry |
| IIA | Information Industry Association |
| PTNO | Perturbation Theory Natural Orbital |
| DDM | Decoupled Direct Method |
| BCR | B Cell Receptors |