| Acronym | Meaning |
 | IGU | International Geographical Union |
| RAS | Royal Astronomical Society |
| M&S | Materials And Services |
| ETEC | Energy Technology Engineering Center |
| MF | Medium Frequency |
| FAT | Factory Acceptance Test |
| ESIG | Environmental And Societal Impacts Group |
| CASC | Coalition For Academic Supercomputer Centers |
| MARK-IVB | N/A |
| RHS | Right-hand Side |
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