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

The alert comes despite the Bay Area’s high vaccination rates, amid 49 California measles cases this year — mostly unvaccinated youth. —Connor Sheets, Los Angeles Times, 14 June 2026

The Santa Clara County Public Health Department said the Bay Area region benefits from very high rates of vaccination against measles. —Molly Gibbs, Mercury News, 13 June 2026

Frequent handwashing, good hygiene habits, and staying up to date on vaccinations can help reduce the risk of getting sick at sea. —Kristy Tolley, Travel + Leisure, 13 June 2026

All this is to say that when tested against the facts, each pillar of the current indictment of vaccination fails. —Literary Hub, 11 June 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