| Acronym | Meaning |
| NAG | Numerical Algorithms Group Inc. |
| ARPA | Advanced Research Projects Agency |
| CDA | Command And Data Acquisition |
| AGT | Above-ground Test |
| ISRIC | International Soil Reference And Information Centre |
| ANS | Advanced Neutron Source |
| CBL | Computer-based Learning |
| BCCB | Baseline Change Control Board |
| PASIN | Particle-Matter Airborne Sampling Inlet Experiment |
| 4DDD | Four-Dimensional Data Assimilation |