hypoestrogenemia
noun
                                                                                                                            
                                                            hy·po·es·tro·ge·ne·mia
                    
                                                                                                              
                                                                                                                                  ˌhī-pō-ˌes-trə-jə-ˈnē-mē-ə  
                                                      
                                                          
            
            variants  
 or chiefly British hypo-oestrogenaemia    
        
    
                                
              
          
                                                      : a deficiency of one or more estrogens (as estrone or estradiol) in the blood                                      
                
                    
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  Merriam-Webster unabridged




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