| Acronym | Meaning |
 | CME | Coronal Mass Ejection (usually Sun) |
| PPP | Point-to-Point Protocol - Purchasing Power Parity |
| RFC | Request For Comments - Royal Flying Corps (WWI Precursor To RAF) |
| RCZ | Rear Combat Zone |
| CGH | Comparative Genomic Hybridisation |
| YGCO | Yamaneko Group Of Comet Observers |
| FRO | Faroe Islands (ISO 3166 Trigram) |
| WPB | War Production Board During World War II |
| POS | Point Of Sale Terminal /Retail Industry Transaction Computers. |
| AFOSR | U.S. Air Force Office Of Scientific Research |
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