inactivate

verb

in·​ac·​ti·​vate (ˌ)i-ˈnak-tə-ˌvāt How to pronounce inactivate (audio)
inactivated; inactivating; inactivates

transitive verb

: to make inactive
chemicals to inactivate viruses
inactivation noun

Examples of inactivate in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The alteration generated by the therapy doesn’t cause the exact change in the PCSK9 gene found in those born with the low-cholesterol version of the gene, but the end result is the same: the gene is inactivated, and LDL levels drop. Alice Park, Time, 28 May 2026 After that point, the carrier will be inactivated and its systems shut down, allowing the removal of all hazardous materials. Peter Suciu, Forbes.com, 21 May 2026 The decision to inactivate the USS Boise is just the start of Phelan’s shakeup plans. Shelby Talcott, semafor.com, 10 Apr. 2026 Regular honey is processed by filtration and heating, which removes or inactivates many of the beneficial compounds in honey, but clarifies it and prolongs its shelf life. Angela Ryan Lee, Verywell Health, 6 Nov. 2025 See All Example Sentences for inactivate

Word History

First Known Use

1906, in the meaning defined above

Time Traveler
The first known use of inactivate was in 1906

Browse Nearby Words

Cite this Entry

“Inactivate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inactivate. Accessed 15 Jun. 2026.

Kids Definition

inactivate

verb
in·​ac·​ti·​vate (ˈ)in-ˈak-tə-ˌvāt How to pronounce inactivate (audio)
: to make inactive
inactivation noun

Medical Definition

inactivate

transitive verb
in·​ac·​ti·​vate (ˈ)in-ˈak-tə-ˌvāt How to pronounce inactivate (audio)
inactivated; inactivating
: to make inactive: as
a
: to destroy certain biological activities of
inactivate the complement of normal serum by heat
b
: to cause (as an infectious agent) to lose disease-producing capacity
inactivate bacteria
inactivation noun
inactivator noun
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