immunization
noun
im·mu·ni·za·tion
ˌi-myə-nə-ˈzā-shən 
also i-ˌmyü-nə-
plural immunizations
: the act of making someone or something immune or the state of being immune : the act or result of immunizing someone or something: such as
a
: the production of immunity in a living organism against a disease or pathogenic agent
The plasmids used for immunization have been altered to carry genes specifying one or more antigenic proteins normally made by a selected pathogen …—
David B. Weiner et al.
David B. Weiner et al.
also
: treatment (as by vaccination) for the purpose of making an organism immune to a disease or pathogenic agent : the administration of an immune-producing substance
Measles is the single most infectious common disease—one person with measles who blunders into a crowded room will give it to almost everyone. If there were no immunization, measles would be universal. —Wayne Biddle
Wayne Biddle Those benefits can include preventive care, such as annual physicals, immunizations, and well-baby visits. —Consumer Reports
Consumer Reports
b
: the providing of protection or exemption from something harmful or unwanted (such as legal action)
immunization from liability
The Interior Department is negotiating with other private landowners to extend similar immunization from prosecution to those who agree to avoid activities that might hurt the bird's chances of survival.—Ken Miller
Ken MillerExamples of immunization in a Sentence
Recent Examples on the Web
Moreover, vaccination rates for DTaP along with other childhood immunizations have been declining.
—Katia Hetter, CNN Money, 1 May 2025
But with anti-vaccine sentiment increasing and cuts to immunization services, vaccination rates for whooping cough over the past two years have declined in children.
—Annette Regan, The Conversation, 29 Apr. 2025
Pakistan is continuing to target nationwide elimination, with Balochistan, Khyber Pakhtunkhwa and Gilgit-Baltistan scaling up immunization campaigns and strengthening maternal and child health services in the coming years.
—Forbes.com, 29 Apr. 2025
The results come as shot makers like Pfizer face uncertainty over immunization policy and regulation under Robert F. Kennedy Jr., a prominent vaccine skeptic who now oversees the nation’s federal health agencies.
—Annika Kim Constantino, CNBC, 29 Apr. 2025
See All Example Sentences for immunization
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Katia Hetter, CNN Money, 1 May 2025
But with anti-vaccine sentiment increasing and cuts to immunization services, vaccination rates for whooping cough over the past two years have declined in children.
—Annette Regan, The Conversation, 29 Apr. 2025
Pakistan is continuing to target nationwide elimination, with Balochistan, Khyber Pakhtunkhwa and Gilgit-Baltistan scaling up immunization campaigns and strengthening maternal and child health services in the coming years.
—Forbes.com, 29 Apr. 2025
The results come as shot makers like Pfizer face uncertainty over immunization policy and regulation under Robert F. Kennedy Jr., a prominent vaccine skeptic who now oversees the nation’s federal health agencies.
—Annika Kim Constantino, CNBC, 29 Apr. 2025
See All Example Sentences for immunization
Cite this Entry
“Immunization.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immunization. Accessed 7 May. 2025.
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immunization
noun
im·mu·ni·za·tion
variants
also British immunisation
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