| Acronym | Meaning |
| CCCS | Change And Configuration Control System |
| DSM | Demonstration Support Model |
| AFD | Axial Flux Difference |
| TCI | Tropical Cyclone Initiation |
| FICA | Federal Insurance Contributions Act |
| BAC | Boeing Airplane Company |
| DECUS | Digital Equipment Computer Users Society |
| EPI | Electronic Position Indicator |
| AIP | Agreement In Principle |
| HEOS | Highly Eccentric Orbit Satellite |