1. 
   MCD
   DSN's maximum-likelyhood convolutional decoder, the Viterbi decoder.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   MCD
   Manipulative Communication Deception
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   MCD
   MCD: Abbreviation (not only for McDonald's but also) for a number of entities in medicine including minimal change disease, mean corpuscular diameter, and medullary cystic disease.
   Found op http://www.medterms.com/script/main/art.html?articlekey=24096
   
   
4. 
   mcd
   1) Cato's 1,400 2) Year chaucer died 3) Year that chaucer died
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/mcd/1
   
   

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