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[im-yuh-nuh-zey-shuh n, ih-myoo-] /ˌɪm yə nəˈzeɪ ʃən, ɪˌmyu-/
the fact or process of becoming immune, as against a disease.
Finance. a method of protection against fluctuating bond interest rates by investing in securities having different yields and terms.
1890-95; immunize + -ation
Related forms
hyperimmunization, noun
nonimmunization, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for immunization
  • Polio is found worldwide, but immunization has reduced the incidence.
  • Across the world, immunization rates continue to rise.
  • The implications for immunization efforts are serious.
  • Society has an obligation to preserve herd immunity, and to insist that immunization be universal.
  • Earlier immunization studies tested the efficacy of isolated particles, which had been produced in insect cells.
  • Five of the seven recovered fertility once the immunization stopped.
  • Even conventional immunization can be overcome if the challenge is large enough.
  • It's centuries since approaches to immunization were first being developed.
  • Routine immunization is highly effective for preventing measles.
  • The veterinarians' group is also urging mandatory immunization of cats.
Word Origin and History for immunization

1893, from immunize + -ation.

Online Etymology Dictionary, © 2010 Douglas Harper
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immunization in Science
  1. The process of inducing immunity to an infectious organism or agent in an individual or animal through vaccination.

  2. A vaccination that induces immunity. A recommended schedule of immunizations for infants and young children includes vaccines against diphtheria, polio, tetanus, measles, mumps, and rubella.

immunize verb
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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immunization in Culture

immunization definition

The process of inducing immunity, usually through inoculation or vaccination.

Note: Frequently, schoolchildren are required by state law to be immunized against certain diseases. Because of such widespread immunization, many diseases that used to be fairly common, including smallpox, tetanus, and whooping cough, have become rare.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Article for immunization

process by which resistance to disease is acquired or induced in plants and animals. This discussion focuses on immunization against infectious diseases in vertebrate animals, specifically humans.

Learn more about immunization with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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