Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym OSO-1 is...

OSO-1 is

  • Orbiting Solar Observatory 1

OSO-1 is also in:

Acronym Definition Searched: AGFS BPP PG PACT NIK MNO EMCON WGGY SF D48 NLE O$$ 16950 V-BAR GHETTO