1. 
   Hemihedron
   Hem`i·he'dron noun (Crystallog.) A solid hemihedrally derived. The tetrahedron is a hemihedron .
   Found op http://www.encyclo.co.uk/webster/H/31
   
   
2. 
   hemihedron
   <chemistry> A solid hemihedrally derived. The tetrahedron is a hemihedron. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?hemihedron
   
   
3. 
   Hemihedron
   • (n.) A solid hemihedrally derived. The tetrahedron is a hemihedron.
   Found op http://thinkexist.com/dictionary/meaning/hemihedron/
   
   

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