adj :  having or showing abnormally high sensitivity to stimuli <cystic fibrosis involves airways -Jour. Amer. Med. Assoc.>  <a patient>  hy*per*re*ac*tiv*i*ty n pl  -ties  
 
 
 
Similar sounding terms:   hyperactive  hy·po·re·ac·tive  pro·ac·tive   purgative 
 
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