n 1  :  a group of intimately related microorganisms distinguished by a common set of antigens  2  :  the set of antigens characteristic of a serotype se*ro*typ*ic adj se*ro*typ*i*cal*ly adv 
, vt, -typed  -typ*ing  :  to determine the serotype of < streptococci>  <serotyped isolates from 100 patients>  .
 
   
 
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