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OS

OS	Orientalia Suecana	In Latin
OS	On-orbit Station	In English	→ Spaceflight engineering, astronautics
OS	Operating Software	In English	→ Software
OS	Operating System	In English	→ Operating systems
OS	Orbiter CEI Specification	In English	→ Spaceflight engineering, astronautics
OS	Operazione Sviluppo	In Italian	→ Organizations and associations → Development

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