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

In the capital, posters are plastered with QR codes for people to look up the nearest spot for vaccination. —Katie Silver, NPR, 28 Mar. 2026

Leila is up to date on vaccinations and microchipped. —Maryanne Dell, Oc Register, 28 Mar. 2026

But in reality, the campaign was substantially funded through a $5 million overpayment for covid-19 vaccination services that her family's company had received from the state of Florida, according to investigators. —Arkansas Online, 27 Mar. 2026

The oldest approach to vaccination in use today includes either inactivated pathogens—such as those in most modern polio vaccines—or pathogens that remain viable but have been weakened enough not to trigger disease—such as those in the measles, mumps and rubella, or MMR, vaccine. —Meghan Bartels, Scientific American, 27 Mar. 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