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
The disease was declared eliminated in the United States in 2000, but periodic outbreaks since the beginning of 2025 have seen more than 2,600 cases in all but six states, most of them among people who are not vaccinated.
—
Robert Abitbol, USA Today, 14 Feb. 2026
While most people vaccinated against the disease will have lifelong protection, there are some instances when a booster dose is recommended.
—Cindy Krischer Goodman, Sun Sentinel, 13 Feb. 2026
Floridians deserve the right to choose for themselves whether to vaccinate their children.
—Josh M. Shepherd, The Orlando Sentinel, 13 Feb. 2026
Immune response is assessed in the laboratory by analyzing blood samples of people who’ve been vaccinated, while efficacy assessments typically involve seeing how well a vaccine protects against cases of the disease.
—Meg Tirrell, CNN Money, 10 Feb. 2026
See All Example Sentences for vaccinate
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Robert Abitbol, USA Today, 14 Feb. 2026
While most people vaccinated against the disease will have lifelong protection, there are some instances when a booster dose is recommended.
—Cindy Krischer Goodman, Sun Sentinel, 13 Feb. 2026
Floridians deserve the right to choose for themselves whether to vaccinate their children.
—Josh M. Shepherd, The Orlando Sentinel, 13 Feb. 2026
Immune response is assessed in the laboratory by analyzing blood samples of people who’ve been vaccinated, while efficacy assessments typically involve seeing how well a vaccine protects against cases of the disease.
—Meg Tirrell, CNN Money, 10 Feb. 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 15 Feb. 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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