1. 
   tetragonus
   An obsolete term for platysma muscle. ... (05 Mar 2000) ...
   Found op http://www.mondofacto.com/facts/dictionary?tetragonus
   
   
2. 
   tetragonus
   Type: Term Pronunciation: tet′ră-gō′nŭs Definitions: 1. Obsolete term for platysma (muscle).
   Found op http://www.medilexicon.com/medicaldictionary.php?t=91039
   
   
3. 
   Tetragonus
   Tetragonus is a genus of moths of the Callidulidae family. ...
   Found op http://en.wikipedia.org/wiki/Tetragonus
   
   
4. 
   tetragonus
   1) An obsolete term for platysma muscle
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/tetragonus/1
   
   

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