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 new guidelines call for people to consult with a doctor, pharmacist or some other health care provider about the risks and benefits of receiving the vaccination before getting the shot. —Brittney Melton, NPR, 8 Oct. 2025

This is what has already happened in the US, where vaccination rates have already been falling. —Katia Hetter, CNN Money, 8 Oct. 2025

Intense exercise right after vaccination can worsen soreness and fatigue, while moderate activity may help. —Ashley Wong, Health, 8 Oct. 2025

Standalone vaccinations can potentially reduce the risk of side effects and can maximize parental choice in childhood immunizations. —Angelica Stabile, FOXNews.com, 8 Oct. 2025

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