| Acronym | Meaning |
| CBEA | Constrained Binary Encounter Approximation |
| FGM | Functionally Gradient Materials |
| DART | Developmental And Reproductive Toxicology Database (NLM) |
| COS | Cosmic Origins Spectrograph |
| CSWP | Centrifugal Sudden [or Coupled States] Wave Packet Method |
| IPHAS | The INT/WFC Photometric H-alpha Survey Of The Northern Galactic Plane |
| NIWR | National Institute For Water Research (South Africa) |
| FHNC | Fermi Hypernetted Chain Method (in Quantum Statistics) |
| DIN | Dissolved Inorganic Nitrogen |
| GAO | General Accounting Office |