Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym OSO-7 is...

OSO-7 is

  • Orbiting Solar Observatory 7

OSO-7 is also in:

Acronym Definition Searched: VT ACE SOW NFSW MPN 68344 STW EMAC NYD SOSDD QFEC 58756 CHD 8AF C-DAY