contaminant

noun

con·​tam·​i·​nant kən-ˈta-mə-nənt How to pronounce contaminant (audio)
: something that contaminates

Examples of contaminant in a Sentence

a filter to remove contaminants from the drinking water
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 agency is closing the Office of Research and Development, which analyzes dangers posed by a variety of hazards, including toxic chemicals, climate change, smog, wildfires, indoor air contaminants, water pollution, watershed destruction and drinking water pollutants. Rob Stein, NPR, 20 July 2025 Used in everything from firefighting foams and waterproof clothing to nonstick kitchenware, PFAS contaminants have found their way into the human body through water and food. Jay Kakade july 12, New Atlas, 12 July 2025 That trash will get broken down, or someone will attempt to make some use out of it—to extract some profit from it—and that’s an extremely dangerous and often lethal process where all sorts of contaminants and forever chemicals enter local ecosystems. Brianne Kane, Scientific American, 11 July 2025 Many Southern California residents and environmental groups had already objected to sending wildfire ash and debris to local landfills that were not designed to handle high levels of contaminants and potentially hazardous waste that are often commingled in wildfire debris. Tony Briscoe, Los Angeles Times, 3 July 2025 See All Example Sentences for contaminant

Word History

First Known Use

1922, in the meaning defined above

Time Traveler
The first known use of contaminant was in 1922

Browse Nearby Words

Cite this Entry

“Contaminant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/contaminant. Accessed 29 Jul. 2025.

Kids Definition

contaminant

noun
con·​tam·​i·​nant kən-ˈtam-ə-nənt How to pronounce contaminant (audio)
: something that contaminates

Medical Definition

contaminant

noun
con·​tam·​i·​nant kən-ˈtam-ə-nənt How to pronounce contaminant (audio)
: something that contaminates

More from Merriam-Webster on contaminant

Last Updated: - Updated example sentences
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