1. 
   Adiathermic
   Ad`i·a·ther'mic adjective [ Greek 'a priv. + ... through + ...heat.] Not pervious to heat.
   Found op http://www.encyclo.co.uk/webster/A/28
   
   
2. 
   Adiathermic
   • (a.) Not pervious to heat.
   Found op http://thinkexist.com/dictionary/meaning/adiathermic/
   
   
3. 
   adiathermic
   adiathermanous, adiathermic In physics, a reference to the inability to transmit radiant heat; not affected by heat.
   Found op http://www.wordinfo.info/words/index/info/view_unit/4265/
   
   

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