thermoform
verb
                                                                                                                            
                                                            ther·mo·form
                    
                                                                                                              
                                                                                                                                  ˈthər-mə-ˌfȯrm  
                                                      
                                                          
            
            
              thermoformed; thermoforming; thermoforms            
        
    
                                
              
          
                                                      : to give a final shape to (a material, such as a plastic) with the aid of heat and usually pressure                                      
                
                    
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  Merriam-Webster unabridged




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