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Meaning of serotype

se•ro•type

Pronunciation: (sēr'u-tīp", ser'-), [key]
— n., v., -typed, -typ•ing.
—n.
  1. a group of organisms, microorganisms, or cells distinguished by their shared specific antigens as determined by serologic testing.
  2. the set of antigens that characterizes the group.
—v.t.
  1. to classify by serotype.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.