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.
Avoid soaps that are labeled antibacterial or that contain environmental contaminants like parabens, phthalates, or triclosan. Brandee Gruener, Southern Living, 11 Apr. 2026 Many samples taken from incoming mail have contaminants on the paper or in the ink, Walsh said. Holly Yan, CNN Money, 5 Apr. 2026 Once the list is finalized and published, the EPA will decide whether to set national limits on the levels of the contaminants allowed in public drinking water. Erika Edwards, NBC news, 2 Apr. 2026 Afterwards, the agency must determine whether to regulate at least five contaminants from the list. ABC News, 2 Apr. 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 17 Apr. 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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