| Acronym | Meaning |
| NTISS | National Telecommunications And Information Systems Security |
| SMRP | Satellite And Mesometeorology Research Project |
| HELLO | N/A |
| LEARN | Laboratory Experience In Atmospheric Research |
| ESSC | Earth System Science Committee |
| ACF | Acid Concentrator Feed |
| AF | Auxiliary Feed |
| MSE | Mean Square Error |
| TGCM | Thermospheric General Circulation Model |
| GUISE | Group For Unidata Interface Software Exploration |