| Acronym | Meaning |
| AP | Administrative Procedure |
| PMS | Particle Measuring Systems |
| EPIC | Engineering Physics Information Center |
| OSSE | Observing System Simulation Experiment |
| HEOS | Highly Eccentric Orbit Satellite |
| ADS | Ancillary Data Service |
| AMFS | Advanced Manufacturing Feasibility Studies |
| ACM | Association For Computing Machinery |
| FATS | Factory Acceptance Test Specification |
| CCID | Confidential Chemicals Identification System |