| Acronym | Meaning |
| NEPH | Nephelometer |
| SAM | Sun-angle Magnetometer |
| O AND A | Orbit And Altitude |
| EPIC | Environmental Photographic Interpretation Center |
| R&D | Research And Development |
| EOFS | Empirical Orthogonal Functions |
| AIP | Additions In Progress |
| APPLY | Parallel Program Generation |
| PPTV | Parts Per Trillion (by Volume) |
| IAMAPS | International Association Of Meteorology And Atmospheric Physics Sciences |