| Acronym | Meaning |
| GISS | Goddard Institute For Space Studies |
| ESDB | Endangered Species Database/Reach Scanlink |
| ADS | Accelerator Driven System |
| BSF | Back Surface Field (solar Cell Structure) |
| TOC | Total Organic Carbon |
| PRM | Primary Reference Material |
| CXC | Chandra X-ray Center |
| MDCB | Methods And Data Comparability Board |
| EFPD | Effective Full Power Day |
| SBR | Styrene Butadiene Rubber |