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Definition of "gamma globulin" [gamma globulin]

  • A protein fraction of blood serum containing many antibodies that protect against bacterial and viral infectious diseases. (noun)
  • A solution of gamma globulin prepared from human blood and administered for passive immunization against measles, German measles, hepatitis A, and other infections. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.