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.
Dirty oil contains acids, moisture, soot, and other contaminants that can etch and damage metal components, cause rust, and corrode the engine. Karen Brewer Grossman, Southern Living, 5 Jan. 2026 The contaminants, toxicity and people responsible were often unknown. James Salzman, The Conversation, 5 Jan. 2026 These robots are also able to self-clean and can provide electrochemical treatments to break down contaminants in situ. Christopher McFadden, Interesting Engineering, 3 Jan. 2026 Independent testing confirms that the supplement contains the ingredients listed on the label and is free from harmful contaminants. Wendy Wisner, Health, 30 Dec. 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 8 Jan. 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

Last Updated: - Updated example sentences
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