| Acronym | Meaning |
 | MLSO | Mauna Loa Solar Observatory |
| IRD | Interface Requirements Document |
| UAC | United Aircraft Corporation |
| PSID | Pounds Per Square Inch Differential |
| RCA | Request For Contract Action |
| DHEW | Department Of Health |
| EM | Electromagnetic Conductivity |
| DBA | Data Base Administrator |
| ENVISAT | European Environmental Satellite |
| NPN | NOAA Profiler Network |
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