1. 
   DFD
   Data Flow Diagram
   Found op http://foldoc.org/DFD
   
   
2. 
   DFD
   Data Flow Diagram
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   DFD
   DFD is a three-letter acronym which has multiple meanings: ...
   Found op http://en.wikipedia.org/wiki/DFD
   
   
4. 
   dfd
   1) Abbreviation for data flow diagram
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/dfd/1
   
   

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