| Acronym | Meaning |
| IGE | International Group Elements |
| ACL | Alternative Concentration Level/limit |
| BIT | Built-in Test |
| AI | Authorized Inspector |
| SUNY | The State University Of New York |
| NOAO | National Optical Astronomy Observatories |
| IDS | Interdisciplinary Study |
| DME | Distance-measuring Equipment |
| LLR | Lunar Laser Ranging |
| DLS | Dynamic Limb Sounder |