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.
These cracks can allow bacteria and other contaminants to enter, causing the fruit to spoil faster—and potentially even leading to food poisoning. Aksha Mittapalli, Better Homes & Gardens, 24 May 2026 In an update Saturday evening, Harry Allen with the EPA said the agency had deployed 24 stationary monitors, which operate around the clock and have not picked up any contaminants. Nina Giraldo, CNN Money, 24 May 2026 According to public records, the inspection also found that GKN used materials containing hexavalent chrome, a dangerous carcinogen; used coatings containing toxic air contaminants; and exceeded facility-wide volatile organic compound emissions. Tony Saavedra, Oc Register, 23 May 2026 Providers and health departments on the East Coast generally identify new contaminants in the drug supply early on. Meg Wingerter, Denver Post, 20 May 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 27 May. 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

More from Merriam-Webster on contaminant

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster