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Showing results for inactivate. Search instead for inactivated.
Synonyms

inactivate

American  
[in-ak-tuh-vayt] / ɪnˈæk təˌveɪt /

verb (used with object)

inactivated, inactivating
  1. to make inactive.

    The bomb was inactivated.

  2. Immunology. to stop the activity of (certain biological substances).


inactivate British  
/ ɪnˈæktɪˌveɪt /

verb

  1. (tr) to render inactive

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of inactivate

First recorded in 1905–10; inactive + -ate 1


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.

See Examples For:

"When we inactivate these neurons, the mice become hyper distractable," Kothari said.

From Science Daily ● Jun. 24, 2026

Meanwhile, Salk’s injectable vaccine, which used formalin to inactivate the virus, was approved in 1955.

From The Wall Street Journal ● Jun. 21, 2026

“I also want to just stress that there’s nothing, there’s no cooking of the mushroom or freezing of the mushroom that would inactivate the toxin,” Smollin said.

From Los Angeles Times ● Jan. 16, 2026

Research so far has shown that virus particles end up in the milk of infected cows, but that pasteurization will inactivate the virus.

From Salon ● May 20, 2024

Extracts in which no attempt was made to inactivate the enzymes present proved unsatisfactory.

From Myology and Serology of the Avian Family Fringillidae A Taxonomic Study by William B. Stallcup

One is normal and functional, while the other has been inactivated by cellular metabolism.

From Science Daily ● Aug. 17, 2026

That means someone inherits two copies of an inactivated gene.

From The Wall Street Journal ● Mar. 12, 2026

Use of gene therapies becomes more challenging as patients age and grow, because treating them often requires higher doses of the inactivated viruses used to deliver the replacement genes.

From Barron's ● Nov. 25, 2025

With such vaccines, called whole-virus vaccines, a person’s immune system is presented with the whole virus, often in weakened or inactivated form.

From Salon ● Sep. 5, 2025

If a mutation inactivated even one function, the mold would be unable to grow—unless the missing ingredient was supplied back into the broth.

From "The Gene" by Siddhartha Mukherjee

The results highlight acidity as a key factor in inactivating the pathogen during cheesemaking.

From Science Daily ● Oct. 21, 2025

The rapid assembly process means there’s virtually no free MVP left in a cell, making it difficult to investigate potential vault functions by targeting and inactivating the proteins.

From Science Magazine ● Jun. 6, 2024

Phosphorylation adds a phosphate group to serine, threonine, and tyrosine residues in a protein, changing their shapes, and activating or inactivating the protein.

From Textbooks ● Jun. 9, 2022

Ultraviolet germicidal irradiation, the placement of UV-C lamps in the air ducts or above dropped ceilings, is extremely effective at inactivating the coronavirus and influenza viruses and even tuberculosis bacteria.

From Washington Post ● Apr. 3, 2022

Now the newer study contends that inactivating the virus in the mouth’s saliva and mucous membranes could help reduce infection in the adjoining nasopharyngeal area, too.

From Scientific American ● Feb. 24, 2022

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