adj 1  :  of, relating to, or affecting the right and left sides of the body or the right and left members of paired organs < nephrectomy>  < tumors of the adrenal glands>   2  :  having bilateral symmetry bi*lat*er*al*ism n bi*lat*er*al*i*ty n pl  -ties  bi*lat*er*al*ly adv 
 
   
 
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