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

South Carolina measles outbreak rises A South Carolina measles outbreak has grown to 16 people, including five new cases from schools with low vaccination rates, state health officials said Tuesday. —Nicole Fallert, USA Today, 15 Oct. 2025

Here’s what to know about getting this season’s Covid-19, flu and RSV vaccinations. —Jacqueline Howard, CNN Money, 15 Oct. 2025

But vaccination rates have plummeted in recent years, and measles cases have soared. —Chantelle Lee, Time, 14 Oct. 2025

Ensure your pet has a current rabies vaccination. —Shelby Slade, AZCentral.com, 14 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