1. 
   Hyopastron
   Hy`o·pas'tron noun [ Hyo- + plastron .] (Zoology) The second lateral plate in the plastron of turtles; -- called also hyosternum .
   Found op http://www.encyclo.co.uk/webster/H/80
   
   
2. 
   hyopastron
   <zoology> The second lateral plate in the plastron of turtles. ... Synonym: hyosternum. ... Origin: Hyo- + plastron. ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?hyopastron
   
   
3. 
   Hyopastron
   • (n.) The second lateral plate in the plastron of turtles; -- called also hyosternum.
   Found op http://thinkexist.com/dictionary/meaning/hyopastron/
   
   

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