phen-
combining form
            variants  
 or pheno-
        
    1
                    
                                          
              
          
                                                      : related to or derived from benzene                                      
              
                             
phenol
                         
                
                    2
                    
                                          
              
          
                                                      : containing phenyl                                      
              
                             
phenobarbital
                         
                
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  Merriam-Webster unabridged




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