thematize
verb
                                                                                                                            
                                                            the·ma·tize
                    
                                                                                                              
                                                                                                                                  ˈthē-mə-ˌtīz  
                                                      
                                                          
            
            
              thematized; thematizing; thematizes            
        
    
                                
              
          
                                                      : to convert (a linguistic form) into a stem having a thematic (see thematic sense 2b) vowel                                      
                
                    
Love words? Need even more definitions?
  
  Merriam-Webster unabridged




Share