disinfection

noun

dis·​in·​fec·​tion ˌdis-in-ˈfek-shən How to pronounce disinfection (audio)
plural disinfections
: the act of disinfecting something
especially : the process of using a disinfectant to destroy, inactivate, or significantly reduce the concentration of pathogenic agents (such as bacteria, viruses, and fungi)
Both viruses are susceptible to disinfection by a weak solution of chlorine bleach. Margaret Reister
… a virulent strain of antibiotic-resistant bacteria spreads beyond hospital walls, some communities are taking extreme measures such as closing schools for disinfection. Laura Landro

Examples of disinfection 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 state’s Department of Agriculture and Markets issued the order, which requires the roughly 80 markets in New York City and Westchester, Nassau and Suffolk Counties to sell their inventory, conduct cleaning and disinfection and remain closed for five days afterward. Tanya Lewis, Scientific American, 12 Feb. 2025 To keep the sickness from spreading, the crew on the ship increased cleaning and disinfection procedures. Minyvonne Burke, NBC News, 7 Feb. 2025 Each uninfected market must sell down all inventory, undergo thorough cleaning and disinfection and then remain closed for at least five days. Carma Hassan, CNN, 7 Feb. 2025 The order requires market owners to sell or otherwise remove all live birds and conduct a thorough cleaning and disinfection of their facilities—even if bird flu wasn't detected there. Alice Park, TIME, 7 Feb. 2025 See All Example Sentences for disinfection

Word History

First Known Use

1722, in the meaning defined above

Time Traveler
The first known use of disinfection was in 1722

Browse Nearby Words

Cite this Entry

“Disinfection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disinfection. Accessed 9 Mar. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!