adj :  readily or frequently changing: as  a  :  readily or continually undergoing chemical, physical, or biological change or breakdown <a antigen>   b  :  characterized by wide fluctuations (as in blood pressure or glucose tolerance) < hypertension>  < diabetes>   c  :  emotionally unstable la*bil*i*ty n pl  -ties  
 
   
 
Similar sounding terms:   label  la·bi·al  lo·be·lia  lob·ule 
 
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