perforatorium
noun
                                                                                                                            
                                                            per·fo·ra·to·ri·um
                    
                                                                                                              
                                                                                                                                  ˌpər-fə-rə-ˈtōr-ē-əm, -ˈtȯr-  
                                                      
                                                          
            
            
               plural perforatoria
                                        -ē-ə  
    
            
        
    
                                
              
          
                                                      : acrosome                                      
                
                    
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