DuckCorp

DuckCorp Dico

(RFC 2229 compliant dictionary server)
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Found one definition 

  1.                 From V.E.R.A. -- Virtual Entity of Relevant Acronyms (August 2020):
                

    
                
                  
    PAD
       Packet Assembling Disassembling (CCITT, X.3, X.28, X.29, PSDN)