im·​mu·​nize | \ ˈi-myə-ˌnīz How to pronounce immunize (audio) \
immunized; immunizing; immunizes

Definition of immunize

transitive verb

: to make (someone or something) immune to something : to provide with protection against or immunity from something … the investigation has been slowed by the refusal of seven former and current Hughes officials to cooperate unless immunized from prosecution.— Andy Pasztor and Rick Wartzman Budding novelists immunize themselves against rejection by recalling rebuffs endured by even the most successful novelists …— Edwin McDowell specifically : to make (a living organism) immune or resistant to a disease or pathogenic agent especially by inoculation : to create immunity in (as with a vaccine) Measles can be almost completely controlled when adequate numbers of people within a population are immunized. Scientific American Medicine immunizing as many citizens as possible before an outbreak makes sense … — Shannon Brownlee

Examples of immunize in a Sentence

Many people had to be immunized after being exposed to the disease.
Recent Examples on the Web Experts say that having a fourth vaccine option across Europe, especially one that requires only one dose, could help immunize people quicker, even though significant amounts of the shot are unlikely to be available until the second half of 2021. NBC News, 10 Mar. 2021 Vaccines are the most powerful prevention, but the pandemic dealt a setback to global efforts to immunize children against polio, measles and other diseases, reducing worldwide coverage for some vaccines to levels not seen in more than a decade. Arkansas Online, 20 Mar. 2022 Many African countries will likely be unable to immunize up to 10 percent of their most vulnerable populations by September, the WHO stated. Lauren Kent And Nimi Princewill, CNN, 3 Sep. 2021 Pakistan’s health minister, Faisal Sultan, said the government aims to acquire an additional 90 million doses and immunize more than half of adults by the end of the year. Saeed Shah, WSJ, 22 June 2021 India, a vaccine-making colossus key to supplying much of the world with low-cost shots, has struggled to immunize itself. Todd Gillespie,, 27 Mar. 2021 While more doses of vaccine are coming to Rhode Island, more needs to be done to increase vaccination rates and this new funding will help immunize in communities that have been hit hardest, the statement said., 30 Mar. 2021 Many smart lawyers, including some federal judges, have argued that the president has no authority to immunize the commission of crimes. Andrew C. Mccarthy, National Review, 5 Mar. 2022 And both the vaccines and widespread omicron variant have helped immunize about 83% of the Oregon population, health officials estimate. oregonlive, 2 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'immunize.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of immunize

1889, in the meaning defined above

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Time Traveler for immunize

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The first known use of immunize was in 1889

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Last Updated

6 May 2022

Cite this Entry

“Immunize.” Dictionary, Merriam-Webster, Accessed 18 May. 2022.

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More Definitions for immunize


im·​mu·​nize | \ ˈi-myə-ˌnīz How to pronounce immunize (audio) \
immunized; immunizing

Kids Definition of immunize

: to make immune especially by vaccination


transitive verb
variants: also British immunise \ ˈim-​yə-​ˌnīz How to pronounce immunize (audio) \
immunized also British immunised; immunizing also British immunising

Medical Definition of immunize

: to make immune


transitive verb
im·​mu·​nize | \ ˈi-myə-ˌnīz How to pronounce immunize (audio) \
immunized; immunizing

Legal Definition of immunize

: to grant immunity to the ultimately ill-fated effort to immunize state judges from the burdens of the federal income tax— J. K. Owens

Other Words from immunize

immunization \ ˌi-​myə-​nə-​ˈzā-​shən How to pronounce immunize (audio) \ noun


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