vaccinate
verb
vac·ci·nate
ˈvak-sə-ˌnāt 
vaccinated; vaccinating
: to administer a vaccine to usually by injection
: to perform or practice vaccination
Examples of vaccinate in a Sentence
We vaccinate all the animals that come to our shelter.
Recent Examples on the Web
For example, a type of design known as a cohort study — which tracks vaccinated and unvaccinated people over time, then compares the rates of illness — is far costlier and typically requires a larger sample size and longer follow-up period.
—
Aria Bendix, NBC news, 10 Apr. 2026
Adults in the high-dose group had an almost 55% lower risk than those who weren't vaccinated, significantly outperforming standard-dose protection.
—Khloe Quill, FOXNews.com, 9 Apr. 2026
Those who may have been exposed should monitor for symptoms, particularly if they have not been vaccinated.
—Katie Langford, Denver Post, 9 Apr. 2026
Those who aren’t vaccinated can become infected up to two hours after a person with the virus leaves the same room or area, health officials said.
—Angela Palermo, Idaho Statesman, 9 Apr. 2026
See All Example Sentences for vaccinate
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Aria Bendix, NBC news, 10 Apr. 2026
Adults in the high-dose group had an almost 55% lower risk than those who weren't vaccinated, significantly outperforming standard-dose protection.
—Khloe Quill, FOXNews.com, 9 Apr. 2026
Those who may have been exposed should monitor for symptoms, particularly if they have not been vaccinated.
—Katie Langford, Denver Post, 9 Apr. 2026
Those who aren’t vaccinated can become infected up to two hours after a person with the virus leaves the same room or area, health officials said.
—Angela Palermo, Idaho Statesman, 9 Apr. 2026
See All Example Sentences for vaccinate
Cite this Entry
“Vaccinate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vaccinate. Accessed 12 Apr. 2026.
Copy CitationKids Definition
vaccinate
verb
vac·ci·nate
ˈvak-sə-ˌnāt
vaccinated; vaccinating
: to give a vaccine to usually by injection
Medical Definition
vaccinate
1 of 2 verb
vac·ci·nate
ˈvak-sə-ˌnāt
vaccinated; vaccinating
1
: to inoculate (a person) with cowpox virus in order to produce immunity to smallpox
2
: to administer a vaccine to usually by injection
: to perform or practice vaccination
vaccinate
2 of 2 noun
vac·ci·nate
ˈvak-sə-ˌnāt
-nət
-nət
: a vaccinated individual
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