| Acronym | Meaning |
 | MPC | Minor Planet Center - Minor Planet Circular |
| RNPS | Radio Network Planning System |
| XRML | EXtensible Rights Markup Language |
| PAC | Pan Africanist Congress -Partial Solar Calibrator - Patriot Advanced Capabilities - Political Action Committee -Primary Auditory Cortex |
| FK | Falkland Islands (ISO 3166 Digram; FIPS 10-4 Territory Code) |
| MTV | MainosTeleVisio (Finnish Commercial TV Company) - Music TeleVision |
| QWG | Quadripartite Working Group (qwig) |
| KTS | Knight Of The Tower And Sword (of Portugal) |
| EOSAT | Earth Observation Satellite |
| DSCSOC | DSCS Operations Center |
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