passive immunity Hear it!

passive immunity definition

passive immunity

  1. immunity (to a disease) acquired by the injection of antibodies from an animal or person who has acquired active immunity
  2. temporary immunity acquired by a child from antibodies transferred from the mother, either while the child is in the womb or when the child drinks the mother's milk

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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