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.
While the most dramatic spikes in phosphorous, nitrate, organic carbon and sediment generally occurred in the first one to three years, some contaminants lingered for much longer. Ben Livneh, The Conversation, 23 June 2025 And exposure to contaminants (lead, cadmium and copper) can be reduced through devices like water filters, plus avoiding hot tap water in cooking, because metals leach more rapidly with heat. New Atlas, 23 June 2025 Even small reductions in one contaminant can yield meaningful health improvements when cumulative. Jasmine Laws, MSNBC Newsweek, 19 June 2025 It’s been 17 years since tainted blood thinner from China injured or killed hundreds of people in the United States, and since then, contaminants and other defects have appeared in a cross section of America’s generic drugs. Brandon Roberts, ProPublica, 17 June 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 4 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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