vaccinate
verb (used with object)
to inoculate with the vaccine of cowpox so as to render the subject immune to smallpox.
had been vaccinating
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past perfect progressiveof vaccinate.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
China and Russia had been vaccinating even before releasing data from their homegrown inoculations.
From Seattle Times ● Jul. 17, 2021
