dwarfism
noun
                                                                                                                            
                                                            dwarf·ism
                    
                                                                                                              
                                                                                                                                  ˈdwȯr-ˌfi-zəm 
                                                      
                                                          
            
                                
              
          
                                                      : a condition of stunted growth                                      
                
                                
            especially                
          
                                                      : a condition (such as achondroplasia) of people and animals marked by unusually small size or short stature                                      
            
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  Merriam-Webster unabridged




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