1. 
   Nak
   [disambiguation] Nak and similar can mean: ...
   Found op http://en.wikipedia.org/wiki/Nak_(disambiguation)
   
   
2. 
   NAK
   Negative Acknowledgment
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   NAK
   Negative Acknowledgement
   Found op http://foldoc.org/NAK
   
   
4. 
   NaK
   == Physical properties == NaK containing 40% to 90% potassium by weight is liquid at room temperature. The eutectic mixture consists of 78% potassium and 22% sodium, is liquid from −12.6 to 785°C, and has a density of 866 kg/m³ at 21°C and 855 kg/m³ at 100°C, making it less dense than water....
   Found op http://en.wikipedia.org/wiki/NaK
   
   
5. 
   NAK
   Nursing At Keyboard
   Found op http://www.netlingo.com/acronyms.php
   
   
6. 
   NAK
   [protocol message] The NAK (or NACK) protocol message is sent in many communications protocols to negatively acknowledge or reject a previously received message, or to indicate some kind of error. Many protocols are ACK-based, meaning that they positively acknowledge receipt of messages. TCP...
   Found op http://en.wikipedia.org/wiki/NAK_(protocol_message)
   
   
7. 
   nak
   1) Abbreviation for negative acknowledge
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/nak/1
   
   

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