| Acronym | Meaning |
 | MGA | Meteorological And Geoastrophysical Abstracts |
| TIAA | Teachers Insurance And Annuity Association |
| FRMAC | Federal Radiological Monitoring And Assessment Center |
| TOS | Tiros Operational Satellite |
| ATSD | Assistant To The Secretary Of Defense |
| ARO | Army Research Office |
| NTRANS | Metacode Translator |
| SSD | Cray's Solid-state Storage Device On The CRAY X-MP/48 Computer |
| DPDC | Data Processing And Distribution Center |
| SAI | Sudden Auroral Intensity |
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