Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym OSN is...

OSN is

  • Operator Security Number

More Meanings For OSN:

  • Operand Segment Number
  • Original Senshi Network
  • Operator Security Number
  • Ocean Science News
  • Origami Societeit Nederland
  • Online Submission Number
  • O Scale News
  • Old School Nintendo
  • On Shelves Now
  • Orion Syndicate Network
  • Online Scouting Network

OSN is also in:

Acronym Definition Searched: RBO GV LTV ASG ACFE-PAC ATCCS 46933 UBL PLN S NIMBY ALSAC LABT SPECI WCFS