| Acronym | Meaning |
| ATM | Apollo Telescope Mount |
| FATS | Factory Acceptance Test Specification |
| FNAL | Fermi National Accelerator Laboratory |
| NRCC | National Research Council Of Canada |
| IDB | Immediate Direct Broadcast |
| SIGMA | Software For Interactive Graphics And Model Analysis |
| CCL | Convection Condensation Level |
| BOM | Bureau Of Mines |
| VG | Visualization Group |
| VISSR | Visible And Infrared Spin-Scan Radiometer |