vaccination

noun

vac·​ci·​na·​tion ˌvak-sə-ˈnā-shən How to pronounce vaccination (audio)
1
: the act of vaccinating
2
: the scar left by vaccinating

Examples of vaccination in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Instead of a blanket recommendation, the agency now advises shared clinical decision-making, meaning patients should discuss the benefits and risks of vaccination with a healthcare provider. Fran Kritz, Verywell Health, 10 Apr. 2026 The question of whether to mandate vaccinations divides the school board and reveals holes in the school’s progressive ideology. Anne Gelhaus, Mercury News, 10 Apr. 2026 The researchers had compared the vaccination status of people who tested positive for Covid to the vaccination status of people who tested negative, showing that people who had received Covid shots were less likely to be hospitalized or visit the emergency department. Aria Bendix, NBC news, 10 Apr. 2026 In Louisiana, for example, framing vaccination as a way to keep your neighbors safe has been used as an effective way to appeal to local communities. Kar-Hai Chu, The Conversation, 10 Apr. 2026 See All Example Sentences for vaccination

Word History

Etymology

earlier, "inoculation with fluid from cowpox pustules," from vaccine "of cowpox" (in the phrases vaccine matter, vaccine virus) + -ation — more at vaccine

First Known Use

1891, in the meaning defined at sense 1

Time Traveler
The first known use of vaccination was in 1891

Browse Nearby Words

Cite this Entry

“Vaccination.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vaccination. Accessed 15 Apr. 2026.

Kids Definition

vaccination

noun
vac·​ci·​na·​tion ˌvak-sə-ˈnā-shən How to pronounce vaccination (audio)
1
: the act of vaccinating
2
: the scar left by vaccinating

Medical Definition

vaccination

noun
vac·​ci·​na·​tion ˌvak-sə-ˈnā-shən How to pronounce vaccination (audio)
1
: the introduction into humans or domestic animals of microorganisms that have previously been treated to make them harmless for the purpose of inducing the development of immunity
oral vaccination
vaccination against smallpox
vaccination for whooping cough
2
: the scar left by vaccinating

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