| Acronym | Meaning |
| MODIS | Moderate Resolution Imaging Spectroradiometer |
| GLIS | Global Land Information System |
| PACT | Professional Association Of Computing And Technology |
| ACFM | Alternating Current Frequency Modulation |
| AXAF | Advanced X-ray Astrophysics Facility |
| NHAP | National High Altitude Photography |
| ISS | Integrated Sounding System |
| MFEM | Magnetic Field Explorer Mission |
| ACACIA | A Consortium For The Application Of Climate Impact Assessments |
| DFD | Data Flow Diagram |