: not having been made immune to something (such as a communicable disease) especially by vaccination
nonimmunized children at risk of measles

Word History

First Known Use

1901, in the meaning defined above

Time Traveler
The first known use of nonimmunized was in 1901

Browse Nearby Words

Cite this Entry

“Nonimmunized.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nonimmunized. Accessed 10 Jul. 2026.

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