| Acronym | Meaning |
| APC | Ammonium Perchlorate |
| NCRP | National Council On Radiation Protection And Measurement |
| TKE | Turbulent Kinetic Energy |
| 4DDD | Four-Dimensional Data Assimilation |
| ESRO | European Space Research Organization |
| ICJOB | IBM-to-Cray Interactive Interface |
| MEF | Master E-mail Facility |
| AES | Atomic Emission Spectroscopy |
| ALEXIS | Array Of Low-energy X-ray Imaging Sensors |
| CAGEX | CERES/ARM/GEWEX Experiment |