contaminant

noun

con·​tam·​i·​nant kən-ˈta-mə-nənt How to pronounce contaminant (audio)
Synonyms of contaminantnext
: 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.
Urban runoff from rivers and creeks can also carry contaminants into coastal waters. Kelly McGreal, FOXNews.com, 19 Mar. 2026 That bill would apply to homes, schools and workplaces — and their properties — requiring insurers to meet existing health standards for lead and asbestos cleanup, while having the state develop additional ones for other contaminants. Los Angeles Times, 19 Mar. 2026 Bacteria levels can increase due to rainstorm runoff, which carries contaminants to the ocean, the department's warning said. Mike Snider, USA Today, 18 Mar. 2026 Wastewater from dyeing and finishing contains high levels of chemical contaminants, according to author Lavinia Muth, contributing to ecological collapse in waterways such as those surrounding Dhaka. Alexandra Harrell, Sourcing Journal, 18 Mar. 2026 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 28 Mar. 2026.

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

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