contamination

noun

con·​tam·​i·​na·​tion kən-ˌta-mə-ˈnā-shən How to pronounce contamination (audio)
1
: a process of contaminating : a state of being contaminated
2

Examples of contamination in a Sentence

swimming in the lake is banned until the contamination is identified and neutralized
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.
Park Street Deli Pork Carnitas Aldi, in coordination with Cargill Meat Solutions Corp, halted sales of Park Street Deli Pork Carnitas (16 oz trays) on April 21 due to possible metal contamination. Josh Hammer, MSNBC Newsweek, 9 July 2025 Human evacuation from war zones can open urban habitats to wildlife, while the destruction of green spaces or contamination of soil and water can fragment ecosystems and reduce genetic diversity. Los Angeles Times, 9 July 2025 While recognizing that bees in general are under threat of habitat loss, the effects of climate change and environmental contamination, the researchers pointed to this extreme level of honeybee pollen exploitation as another potential danger. Sharon Udasin, The Hill, 7 July 2025 The company would also deal with the problem of sealing the sample return capsule and making sure that it is decontaminated in accordance with NASA and international safety protocols against interplanetary contamination. New Atlas, 6 July 2025 See All Example Sentences for contamination

Word History

Etymology

Middle English contaminacioun, borrowed from Latin contāminātiōn-, contāminātiō "defilement, pollution," from contāmināre "to defile, pollute" + -tiōn-, -tiō, suffix of verbal action — more at contaminate

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of contamination was in the 15th century

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Cite this Entry

“Contamination.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/contamination. Accessed 18 Jul. 2025.

Medical Definition

contamination

noun
con·​tam·​i·​na·​tion kən-ˌtam-ə-ˈnā-shən How to pronounce contamination (audio)
1
: a process of contaminating : a state of being contaminated
2
: something that contaminates

More from Merriam-Webster on contamination

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