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

Health workers and police officers assigned to protect them are frequently targeted by militants who falsely claim the vaccination drives are part of a Western conspiracy to sterilize children. —ABC News, 18 May 2026

But the vast majority of adult Americans support vaccination against preventable illnesses like measles. —Adam W. Gaffney, STAT, 18 May 2026

Still, over the years, the vaccination rate had fallen well below the US level, dipping below 80% by 2023, according to the study in Vaccines. —Mary Beth Sheridan, CNN Money, 17 May 2026

Since arriving at the FDA last March, Hoeg led investigations into the safety of injectable RSV drugs for children, antidepressants and COVID-19 vaccinations. —Matthew Perrone, Fortune, 16 May 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