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

Clinics are bundling vaccination with wellness visits and using reminders to make prevention easier. —Henry I. Miller, Boston Herald, 25 Nov. 2025

Though symptoms can vary depending on age and vaccination status, whooping cough usually starts with a runny or congested nose and mild coughing, officials said. —Caroline Neal, Louisville Courier Journal, 25 Nov. 2025

Unfortunately, overall vaccination rates are continuing to decline, with the CDC reporting that only 6 percent of children and 14% of adults are up to date on their shots. —Sarah Scott, Parents, 25 Nov. 2025

Flu vaccination rates have been trending downwards in recent years, and Chu and other clinicians worry the decline will continue this year. —Lauren J. Young, Scientific American, 24 Nov. 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