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: INSL GLBE GCC WTBG RBL TLA OF WYOL PH VPO FADT LLL TEV HMMV PLEA