dis·​in·​fest ˌdis-in-ˈfest How to pronounce disinfest (audio)
disinfested; disinfesting; disinfests

transitive verb

: to rid of small animal pests (such as insects or rodents)
disinfestation noun

Examples of disinfest in a Sentence

Recent Examples on the Web Large enough to disinfest entire trucks loaded up with furniture, the sheds used Zyklon B to produce hydrogen cyanide gas, the same chemical used by the Nazis in their death camps. Jo Caird, Smithsonian Magazine, 5 Apr. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'disinfest.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1920, in the meaning defined above

Time Traveler
The first known use of disinfest was circa 1920

Dictionary Entries Near disinfest

Cite this Entry

“Disinfest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disinfest. Accessed 6 Dec. 2023.

Medical Definition


transitive verb
dis·​in·​fest ˌdis-ᵊn-ˈfest How to pronounce disinfest (audio)
: to rid of small animal pests (as insects)
disinfestation noun
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