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.
Complaints can be submitted by calling 1-800-CUT-SMOG (1-800-288-7664), or by using the agency's online complaint system to report air contaminants both indoors and outdoors. Chelsea Hylton, CBS News, 22 June 2026 However, use caution with glossy and highly-colored cardboard, which may contain contaminants that aren’t safe for food gardens. Lauren Landers, Better Homes & Gardens, 18 June 2026 Locals often build up some tolerance to these water contaminants, but visitors haven’t, so a glass a resident drinks safely can leave a traveler sick for days. Ryan Brennan, Miami Herald, 16 June 2026 There are biological contaminants, and that’s anything that’s a living organism. Kat Tretina, Charlotte Observer, 15 June 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 26 Jun. 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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