vaccination

noun

vac·​ci·​na·​tion ˌvak-sə-ˈnā-shən 

1

: the act of vaccinating

2

: the scar left by vaccinating

Examples of vaccination in a Sentence

Recent Examples on the Web

Pets must have an up-to-date rabies vaccination. —Nick Sullivan, Charlotte Observer, 6 Apr. 2026

Jean-Cedric Meeus, chief of global transport and logistics for UNICEF, said his agency is using a mix of land and air routes to send vaccines to Nigeria and Iran in order to get them there in time for the vaccination campaigns, but the costs have soared. —ABC News, 4 Apr. 2026

Drops in vaccinations have already contributed to the rapid resurgence of measles outbreaks across the country. —Eduardo Cuevas, USA Today, 4 Apr. 2026

The animals underwent vaccinations, fecal testing and received flea prevention treatment as part of the intake process, according to Macomb County Animal Control staff. —Eric Henderson, CBS News, 3 Apr. 2026

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

Phrases Containing vaccination

• anti-vaccination

Rhymes for vaccination

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Kids Definition

vaccination

noun

vac·​ci·​na·​tion ˌvak-sə-ˈnā-shən 

1

: the act of vaccinating

2

: the scar left by vaccinating

Medical Definition

vaccination

noun

vac·​ci·​na·​tion ˌvak-sə-ˈnā-shən 

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