| Acronym | Meaning |
| PSID | Pounds Per Square Inch Differential |
| CAA | Concepts Analysis Agency |
| FMIT | Fusion Materials Irradiation Test Facility |
| ERDA | Energy Research And Development Administration |
| HTO | Tritiated Water |
| ESPIRIT | European Strategic Programme For R&D In Information Technology |
| JCP/ PO | Joint Climate Program/Projects Office |
| ANSTO | Australian Nuclear Science And Technology Organization |
| FSL | Forecast Systems Laboratory |
| (C4) | Center For Clouds |