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

CSDN is

  • Circuit Switched Data Network

CSDN is also in:

Acronym Definition Searched: 27949 ITOS QCU AMPR VSNP KTE 18334 DOS UPM SV WUWU WFPN QAM 89D MSPP