growth hormone
noun
1
                    
                                          
              
          
                                                      : a vertebrate polypeptide hormone that is secreted by the anterior lobe of the pituitary gland and regulates growth                                      
                
                                
            also                
          
                                                      : a recombinant version of this hormone                                       
                
            called also somatotropin
2
                    
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  Merriam-Webster unabridged




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