| Acronym | Meaning |
| HAGIS | Headspace Analysis Gas-phase Infrared Spectroscopy |
| FPKKR | Full-potential Korring-Kohn-Rostoker |
| MSS | Mobile Servicing Station [space Station] |
| FFDCA | Federal Food, Drug, And Cosmetic Act (US) |
| BDT | Best Demonstrated Technology |
| REA | Reactive Arthritis |
| THM | Transcorrelated Hamiltonian Method |
| FCF | Franck-Condon Factor |
| NAWDEX | National Water Data Exchange |
| SCBA | Self-consistent Born Approximation |